Comment 129 for bug 1690719

(In reply to Jeroen Bollen from comment #110)
> ...and similarly moving the mouse
> would cause massive frame drops in applications. Just as much as starting a
> hover effect by moving the mouse over a button would freeze the cursor for
> multiple seconds.

I can confirm that this still happens. I experience complete display+input freezes when hover-over tooltips disappear, and when menubar drop-downs or right-click context menus appear or disappear. There are plenty of other simple actions that can cause freezes as well. This doesn't happen right after a clean boot, but can start to occur after an uptime of about an hour.

Interestingly, the behaviour of the freezes is different depending on the app. For instance, tooltop disappearances cause hangs for Firefox and Gvim, but not Evolution and Nautilus, even though all of those apps use GTK3. Also, for some apps, context menus cause a hang only when they disappear, but for other apps, context menus cause a hang when they either appear or disappear.