Tabbed widgets not working

[eedugon]

Describe the bug

Last week tabbed widgets were working fine, but I've just downloaded the new tool and it's not rendering.
Based on @bmorelli25 feedback it looks it could be a regression after adding support of extra features.

Example page from observability-docs: Step 4 of this doc (official doc https://www.elastic.co/guide/en/observability/current/get-started-with-apm-server-binary.html).

Trying http://localhost:3000/get-started-with-apm-server-binary.html locally and the tabbed widget looks like:

Expected behavior

Tabbed widget should show all existing tabs.

Steps to reproduce

No response

Tooling

• docs-builder
• migration tooling
• I'm not sure

[colleenmcginnis]

Also seeing radio buttons further down the page (which I'm guessing should have been tabs):

[colleenmcginnis]

Interestingly, all the tabs but Ruby work here...

[colleenmcginnis]

There's a tab widget inside a list that's also not working:

AsciiDoc	docs-builder
Link	Link

[bmorelli25]

@siamakp-elastic I think this is a :::: vs ::::: issue