`GR` with values given to `colorbar_ticks` broken

[oameye]

Details

testplot = (; kwargs...) -> plot([0,1]; label=:none, zcolor=[0,1], kwargs...)
plot(
    testplot(),
    testplot(; colorbar_ticks=([0.5], ["0.5"])),
)

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)	x
unicodeplots			x
pythonplot			x
pgfplotsx			x
plotlyjs			x
plotly			x
gaston			x

Versions

Plots.jl version: Plots v1.40.17
Backend version (]st -m <backend(s)>): GR_jll v0.73.17+0
Output of versioninfo():

Julia Version 1.10.10
Commit 95f30e51f41 (2025-06-27 09:51 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 12 × AMD Ryzen 5 5600X 6-Core Processor
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, znver3)
Threads: 10 default, 0 interactive, 5 GC (on 12 virtual cores)
Environment:
  JULIA_EDITOR = code
  JULIA_VSCODE_REPL = 1
  JULIA_NUM_THREADS = 10