Version 1.8.3

This patch release brings targeted UI fixes, improves Python and Django compatibility, and enhances the developer and contributor experience. It also includes fixes for Tabulator, Pyodide, templates, and app interactivity, along with several documentation and robustness improvements. Many thanks to @ahuang11, @hoxbro, @maximlt, @MarcSkovMadsen, @Coderambling and @philippjfr for their contributions to this release.

✨ Enhancements

• Align CSS variables between default and dark themes (#8248)
• Ensure behavior of dynamically served apps is aligned with file based apps (#8249)
• Add export() method to Vega pane (#8266)
• Add official support for Python 3.14 (#8241)
• Add render_policy="manual" option for JSComponent (#8285)
• Disable text selection when editing in EditableTemplate (#8286)
• Prevent full text selection when replacing input values on CodeEditor (#8262)

🐛 Bug Fixes

• Fix FastAPI bug where pn.state.location wasn’t retained (#8283)
• Fix Tabulator popup container rendering issues (#8247)
• Resolve issues with pipeline next/previous buttons (#8273)
• Ensure ESM compilation uses _esm path (#8245)
• Fix CORS issue with turbine data URL in Pyodide (#8272)
• Ensure ParamRef, ParamFunction, and ParamMethod do not override styling (#8264)
• Fix toggle behavior in BootstrapTemplate sidebar (#8268)
• Minor robustness improvements for Bokeh model interop (#8270)

📚 Documentation

• Minor enhancements to the Panel Gallery deployment (#8240)
• Update Django integration docs (#8252)
• Clarify setup instructions (#8255)
• Fix typo and layout issue in README.md (#8287)
• Fix unclosed code block in convert.md (#8280)

🧪 Infrastructure & Developer Experience

• Remove Bokeh metadata workaround related to Tornado (#8243)

• Bump Django versions in example apps:

  • 4.2.22 → 4.2.25 (#8226)
  • 4.2.22 → 4.2.26 in multi-apps example (#8282)

• Add setup-dev command for easier local development (#8277)

• Improve internal _descendents resolution for parameterized classes (#8284)

• Add __panel__ stub method to PyComponent (#8271)

Version 1.8.2

This patch release focuses on polishing the user experience, fixing regressions, and improving documentation, particularly around app deployment and Tabulator interactivity. It includes several frontend and CSS tweaks, pyodide compatibility fixes, and two new deployment guides for Anaconda Notebooks and PythonAnywhere. Thanks to @philippjfr, @maximlt, @etihwo, @MarcSkovMadsen, and @Coderambling for their contributions to this release.

✨ Enhancements

• Allow custom control over Tabulator editable rows using JSCode (#8204)
• Improve UI discoverability on EditableTemplate (#8206)
• Set pointer cursor on "Connection Lost" toast notification (#8209)
• Serve index.html automatically when serving a static directory (#8222)

🐛 Bug Fixes

• Ensure Tabulator does not break if other components don't correctly initialize (#8212)
• Fix Pyodide jsnull value conversion in Bokeh JSON patches (#8217)
• Fix regression causing column headers not to stretch properly across layout (#8219)
• Ensure config.npm_cdn is respected (#8233)
• Ensure bundled pyodide resources use correct path separator (#8230)
• Ensure pyodide resource bundle is only generated if necessary (#8234)
• Ensure pyodide session is registered as loaded (#8235)

📚 Documentation

• Add how-to guide on deploying Panel apps on Anaconda Notebooks (#8207)
• Add how-to guide on deploying Panel apps on PythonAnywhere (#8216)
• Update Plotly.ipynb to reflect current Plotly version and correct doc URLs (#8214, #8203)
• Add missing Anaconda logo to documentation (#8208)
• Add how-to guide on using uv to distribute Panel apps and dependencies (#8205)

Version 1.8.1

Many thanks to @ATL2001 (first contribution), @Coderambling, @philippjfr, and @hoxbro for their contributions.

Enhancements

• Add configuration to disable container popup (#8200)

Bug Fixes

• Ensure Tabulator empty column has no width (#8193)
• Add UTC timezone to default time for croniter (#8199)

Documentation

• Update indicators_performance.md to fix typo (#8192)

Version 1.8.0

This release brings a wide range of new features, enhancements, and compatibility improvements. Highlights include support for JSCode in ECharts and Tabulator, reworked WebSocket reconnection, and the ability to bundle resources into WASM apps, and numerous bug fixes to improve stability across components and templates. It also includes compatibility updates for Bokeh 3.8 and several improvements for use in Pyodide, JupyterLite, and authentication-based deployments. Many thanks to our returning contributors @dalthviz and @etihwo, a very warm welcome to our new contributors @c-meier and @flxmr and as usual many thanks to our core team including @maximlt, @hoxbro, @ahuang11, @MarcSkovMadsen and @philippjfr.

🚀 Features

• Support for inline JavaScript functions in ECharts and Tabulator via JSCode wrapper (#8162)
• Add support for reconnecting to a session after network disruption (#8120)
• Add support for AVIF images (#8164)
• Add support for bundling local resources into WASM apps (#8181)

✨ Enhancements

• Improve .from_param() behavior and error messages (#8047, #8079)
• Add --reuse-sessions warm option to reduce session cold starts (#8087)
• Enable event dispatch immediately after WebSocket connect (#8101)
• Improve error message display in LiteralInput (#8102)
• Allow hold usage from a thread (#8113)
• Improve uniformity and consistency in Tabulator column configuration (#8127)
• Trigger param.Event correctly on value change (#8148)
• Allow registering external extension_cdn for JS resources (#8175)
• Allow overriding the default_widgets on HoloViews pane (#8186)

🐛 Bug Fixes

• Ensure Terminal resizes correctly (#8109)
• Bundle correct AceEditor version (#8111)
• Remove bokeh-sampledata dependency from Pyodide builds (#8138)
• Correct resource handling when resources are symlinked (#8143)
• Correct behavior when FileDownload resets cursor before reading (#8154)
• Fix handling of NaT values (#8156)
• Apply template design after rendering template (#8155)
• Prevent select-all checkbox from being hidden in Material theme (#8147)
• Fix handling of exclusive bounds in Param widgets (#8165)
• Fix layout of Card headers with row flex mode (#8166)
• Uncap height of children in scrollable Column layouts (#8167)
• Fix errors in ECharts when chart has already been destroyed (#8168)
• Fix Tabulator filter behavior with list-based filters (#8169)
• Allow Card to overflow container (#8170)
• Fix pyodide model syncing (#8174)

⚠️ Deprecations

• Removed panel.io.model.hold (was moved to panel.io.document.hold in 1.6.0) (#8188)
• Deprecated panel.chat.langchain.PanelCallbackHandler (to be removed in 1.9.0) (#8188)

📦 Compatibility & Infrastructure

• Update component versions (#7447)
  • DeckGL version from 9.0.20 to 9.1.14
  • ECharts version from 5.6.0 to 6.0.0
  • KaTeX version from 0.6.0 to 0.16.22
  • Perspective version from 3.6.1 to 3.8.0
  • Plotly version from 3.0.1 to 3.1.0
  • Vega version from 5 to 6.1.2 and vega-lite dependency from 5 to 6.3.0
  • Vizzu version from 0.15 to 0.17.1
• Drop support for Bokeh 3.5 and 3.6 (#8116)
• Full compatibility with Bokeh 3.8 (#8160)

📚 Documentation

• Add guide for using WebSocket comms (#7952)
• Update links for Tabulator (#8126)
• Align component parameter reference documentation (#8152)

Version 1.7.5

This patch release brings a number of important bug fixes and refinements, including improved modal behavior, Param integration fixes for ESM, and security hardening of authentication templates. Thanks to @harmvanderheijden, @MarcSkovMadsen, @maximlt, and @philippjfr for their contributions.

Enhancements

• Improve .from_param() error messages (#8047)
• Add --reuse-sessions warm option to preload and cache apps before first use (#8087)

Security

• Fix XSS vulnerabilities in login and OAuth error templates by escaping user-controlled input (#8049)

Bug Fixes

• Fix value_throttled handling in Param panes (#8057)
• Prevent AutocompleteInput from resetting when restrict=False (#8056)
• Fix callback cleanup for --reuse_sessions mode (#8052)
• Reset param.Event state on ESM components (#8054)
• Allow Player components to start upon initialization (#8058)
• Fix modal dialog stacking and focus behavior in VanillaTemplate (#8059, #8060)
• Avoid errors in Tabulator when editing DataFrames with pd.NA values (#8068)
• Add guard for undefined url in ImportedStyleSheet (#8071)
• Ensure session token payload is correctly updated when reusing sessions (#8072)
• Ensure --reuse-sessions caches the --index app correctly (#8073)
• Add debounce logic to ModelChanged events in Pyodide to improve performance and prevent redundant updates (#8077)
• Ensure Layoutable params propagate to HoloViews plots (#8078)
• Fix regression in handling param.Action in .from_param() utility (#8079)
• Ensure LoadingSpinner.visible correctly hides the component (#8081)
• Ensure JSONEditor triggers on re-ordering of nodes (#8086)
• Fix JSONEditor menu option to improve usability (#8085)

Documentation

• Add websocket communication how-to guide to documentation (#7952)
• Add note about increasing proxy buffer size for OAuth behind reverse proxies (#8084)

Maintenance

• Fix gallery deployment automation (#8055)

Version 1.7.4

This patch release introduces small but impactful security, compatibility, and usability improvements. It enhances OAuth behavior, adds byte support for the PDF pane, and fixes several rendering and import issues across backends and components. Thanks to @ahuang11, @dalthviz, @MarcSkovMadsen, and @philippjfr for their contributions.

Enhancements

• Add support for bytes input to the PDF pane (#8044)
• Add logout_url for Auth0 to OAuth error page template (#8036)

Security

• Add authentication to files served from --static-dirs (#8042)
• Escape error messages shown on the OAuth error page fixing XSS vulnerability (#8043)

Bug Fixes

• Ensure ReactComponent forces a re-render after render step (#8037)
• Fix this.mouse bug in ECharts implementation (#8041)
• Fix incorrect import path in Django integration docs (bokehjsdir → bokehjs_path) (#8040)
• Update Bokeh/FastAPI extra dependency pin to ensure compatibility (#8039)

Version 1.7.3

This patch release includes several critical stability improvements, JavaScript race condition fixes, and developer experience enhancements. It also introduces small but helpful UI features such as exception copying and better error feedback in CLI and ESM workflows. Many thanks to contributors @etihwo, @bsdz, @Coderambling, @hoxbro, @philippjfr, and @MarcSkovMadsen.

Enhancements

• Add “Copy to Clipboard” button for exceptions in the UI (#8034)
• Enable MathJax rendering if the extension is available (#8004)
• Allow setting a custom title for Tabulator multi-index columns (#8008)
• Improve feedback in panel compile and reactive ESM workflows (#8012, #8010)
• Ensure exceptions are printed to the command line in development mode (#8022)

Bug Fixes

• Guard against race conditions in DeckGL during resize (#8031)
• Prevent errors when client_comm is undefined in some JS execution contexts (#8030, #8033)
• Fix dark theme background issue in MultiChoice widget (#8014)
• Avoid rendering Plotly components if container is not yet defined and prevent layout boomeranging (#8021)
• Ensure React useState callbacks are registered only once (#8023)
• Support Path objects in stylesheet definition (#8026)

Version 1.7.2

This patch release includes a number of important bug fixes, optimizations, and compatibility updates, particularly for React and ESM-based components. It also includes enhancements to the Tabulator table and more robust support for Audio/Video panes. Many thanks to @etihwo for his continued contributions and the maintainer team @hoxbro and @philippjfr.

Enhancements

• Support for passing bytes and BytesIO objects to Audio and Video panes (#7963)
• Add header tooltips to Tabulator (#7988)
• Optimize layout calculations for ESM components (#7989)
• Allow nested ReactComponents to bypass Shadow DOM (#7991)
• Support --ico-path CLI option to support explicit .ico path specification (#7992)
• Loosen parameter type for ReactiveExpr.widget_layout (#7964)
• Automatically unblock Comm on WebSocket re-connect (#7986)

Bug Fixes

• Fix Tabulator fast design and fix styling issues (#7956)
• Keep reference state consistent after Pyodide syncing (#7966)
• Ensure correct model is used when determining if a link is set up (#7968)
• Do not dispatch events on hold/unhold when the document is uninitialized (#7972)
• Ensure theming does not error on PyComponent (#7975)
• Prevent stylesheet patch from dispatching during initial load (#7978)
• Fix caching issue for ESM render modules (#7990)
• Correct initialization behavior of ReactComponent (#7996)
• Fix threading race condition when applying consecutive updates to Param widgets (#8003)

Version 1.7.1

This patch release adds a new option to disable FileDropper previews and fixes a regression when updating Column children in Bokeh<3.7. Additionally, it includes a number of documentation improvements.
Many thanks to our returning contributors @dalthviz, @emmanuel-ferdman, @MarcSkovMadsen, and @hoxbro

Enhancements

• Add option to disable FileDropper previews (#7944)
• --index-titles help string typo fix and don't call title on user input (#7935)

Bug fixes

• Migrate to correct logger interface (#7931)
• Column updates not working for Bokeh<3.7 (#7948)

Documentation

• Fix image links in Azure documentation (#7938)

Version 1.7.0

This minor release is not as jam-packed as previous minor releases but adds a number of quality of life improvements, bug fixes and features along with version and compatibility updates for a number of JS dependencies. Many thanks to some of our more frequent contributors @dalthviz, @etihwo, our new contributor @emmanuel-ferdman and our maintainers @hoxbro, @MarcSkovMadsen and @philippjfr.

Features

• Add a secondary (right) sidebar to the FastListTemplate (#7774)
• Add Date(Time)Picker.allowInput option (#7886)
• Add Markdown.disable_anchors option (#7902)
• Add config.cache_path variable to configure default location for diskcache (#7903)
• Support custom cookie path (#7911)
• Allow customizing index page titles with --index-titles CLI option (#7916)
• Add Image.target option to configure where to open link_url (#7924)

Enhancements

• Display parameter name in error messages (#7879)
• Improve Material design styling (#7891, #7917)
• Improve logic for computing Tabulator page size automatically (#7915)

Versions and Compatibility

• Bump Ace CodeEditor version 1.40.1 and add themes (#7874)
• Bump pyodide version to 0.27.5 (#7905)
• Bump ECharts version to 5.6.0 (#7905)
• Bump JSONEditor version to 10.2.0 (#7905)
• Bump Perspective version to 3.6.1 (#7919)

Bug fixes

• Deduplicate components before compiling (#7887)
• Avoid boomeranging of events after hold is applied (#7892)
• Handle .ico image base64 mime-type correctly (#7894)
• Ensure FileDropper height is not limited (#7898)
• Ensure correct stylesheet cache is used by theme hooks when component is shared between sessions (#7896)
• Reset BaseTemplate._documents correctly on autoreload (#7897)
• Ensure widget CSS is loaded correctly when server path is prefixed (#7900)
• Correct display Tabulator with multi index and multi index column (#7907)
• Ensure stretch and scale sizing_mode does not cause overflow in container (#7928)

Documentation

• Document caching of dependencies by combining cache with depends (#7876)
• Remove deprecated keyword in doc for DateRangeSlider and DateTimeRangSlider (#7893)
• Add guidance on troubleshooting OAuth issues (#7921)