In an autofilter popup, hover over Custom Sort, which opens it, then hover back over some other sort item, eg. Sort Ascending.
-> The second level Custom Sort popup isn't dismissed.
No other action can be done on the autofilter popup until closing and reopening it.
GTK3 backend is affected, gen is unaffected.
Started with the following commit, bibisected using repo bibisect-linux-64-5.3.
author Caolán McNamara <email@example.com> 2016-11-01 20:32:57 +0000
committer Caolán McNamara <firstname.lastname@example.org> 2016-11-02 14:04:18 +0000
gtk3: allow float grab inside float grab