I've noticed this bug today; it seems like both 3.0.2-32 and the rawhide snapshot version seem to have the same issue. This is pretty reproducible in filezilla, but I've noticed it affects multiple wx applications.
Clicking on a menubar entry such as File or Edit or View in filezilla pops up a submenu but instead of being below the entry, it covers it up. This can be compared with running it in X or xwayland (running "GDK_BACKEND=x11 filezilla"), in which it displays correctly below the entry.
I can take a screenshot if it helps, but it's pretty obvious after comparing the two issues.
I took a look through the commits and tickets but I don't see any mention of this issue, so I don't think there's anything to backport.
I made a ticket upstream (awaiting moderation), but I would like to keep it here too for tracking purposes.
Weird. I don't see this on F25 at least. Can you take a screenshot? I wonder if perhaps some recent update broke this? I could be a couple weeks behind on updates.
I've looked into this, this is a bug with GTK3 it seems; I can repro the issue with gnome-terminal.
Unfortunately I can't get a screenshot as the menu doesn't show up in
Sorry, my last comment got cut off:
Unfortunately I can't get a screenshot as the menu doesn't show up in the picture using the snapshot tool I'm using. If you have any other suggestion, please let me know.
Upstream bug report, seems to be fixed in the gtk 3.22 git, but I have yet to test it:
I'm assuming it'll be fixed in 3.22.8, whenever that lands.
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle.
Changing version to '26'.
This seems to be fixed in gtk 3.22.8, which landed in stable a little while ago.
Closing as fixed.