Dropdown menus don't work in new 99.0 version

[MrBonkers]

With the new 99.0 update, the dropdown menus on Google- and maybe other places don't work.   If I refresh the page a few times, it *sometimes* works.  But usually not.

I'm talking about the down pointing carret  symbol used to expand a list:   V

For example you see it on web pages like this,  you click it to show a drop-downlist:

What is the best car?    V
What is the best bike?   V

Also the text links that go with these  sections of the page do not work, even though you get the pointing finger icon when moused over.

[MrBonkers · Accepted solution]

Well the problem seems to have gone away after I tested it a few times.   Previously restarting firefox did nothing to solve it.   Maybe something related has cleared it up.