javascript broken in firefox 124

[js1]

Firefox 124 seems to have broken javascript.

[Dmitry Shachnev (mitya57)]

How is this related to indicator-appmenu?

[js1 (sujiannming)]

I'm pretty sure I entered "firefox" but somehow Firefox picked the default "indicator-appmenu".

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we cannot work on this bug because your description didn't include enough information. You may find it helpful to read "How to report bugs effectively" http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem.

We have instructions on debugging some types of problems at http://wiki.ubuntu.com/DebuggingProcedures.

At a minimum, we need:

1. The specific steps or actions you took that caused you to encounter the problem.
2. The behavior you expected.
3. The behavior you actually encountered (in as much detail as possible).

Please also ensure that you include the release and flavour of Ubuntu that you are using.

Thank you!

[js1 (sujiannming)]

This is on Kubuntu 23.10. Please see attached zip files with video demonstrations of 123 vs 124 behavior, and screenshot indicating that "firefox" deb is not officially supported by ubuntu-bug report.