Brought to my attention by @Sdkb in T386758 (thank you!)
Looks like this was broken during fixes to Parsoid in T359005
**Steps to replicate the issue** (include links if applicable):
* Visit https://en.m.wikipedia.org/w/index.php?title=PayScale&direction=prev&oldid=1276323293&useparsoid=0
* Scroll down to overview
* Click the issues banner
**What happens?**:
Banner doesn't open
**What should have happened instead?**:
* Banner should open
* No warnings in JS console
{F58426981,size=full}
Note: it does seem to work in Parsoid.
**Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia):
All browsers
e.g. Browser stack Android Galaxy S23 Chrome
**Other information** (browser name/version, screenshots, etc.):
There are also some deprecation warnings that may be related