Comment 15 for bug 1780790

I have a similar issue, in my case with the Bookmark bar's folders and the system menu. I also cannot reproduce this at will, but today it happened consistently enough to make a short recording. I'm on Pop_OS (System76's flavor of Ubuntu 19.04) with the default Gnome Desktop, Firefox 70.0.1 is installed from packages and maximized on the screen.

I have a recording, how and where can I upload that?