The build history page has this hyperlink in a table cell (redacted by changing letters and digits to x and 1):
and this CSS rule applies to it:
Microsoft Edge 100.0.1185.29 renders it nicely:
Mozilla Firefox 91.8.0esr however breaks the "Xx Xxxxxx » Xxxxxxxxxxxx xxxxxxxx xxxxxxxxxx » xxxxxxx" part (before the first <wbr> tag) to two lines, and then renders the rest "/XXXXX-111_xxxxxxxxxxxxxxxxx" at the right side of that, even centering it vertically:
I don't know whether that is a Firefox bug or what, but perhaps the compatibility can be improved somehow.
If I disable display: inline-flex; in the CSS rule, then the line breaks look a lot nicer in Firefox 91.8.0esr:
Alternatively, if I keep the original CSS rule but replace each <wbr> with ​, then Firefox 91.8.0esr renders like this: