I sometimes have a popup that shows up and refuses to go.
Regardless what button I click it doesn't react. It just stays and covers part of the page. I have to resort to ctrl-shift-C to remove it. Is it possible to fix that behaviour?
I am seeing this in Waterfox v. 56.2.8 (64-bit). I am running Windows 10 (version 1809) in French.
The problem seems to go away when I log in. When I clear all cookies it comes back.
I looked at the web console but no warning or error when I click. However, when I reload the page, I can see some errors but no clue whether they are related to the problem or not.