[GKv3/Gtk] Some tools popups misbehave on linux

[burtek]

gedkeeper-.2.webm

1. Can't change any setting
2. If I close the parent dialog, the popup stays forever (unitl GedKeeper is closed), but becomes editable

This happens to:

1. Location select dialog - tools button
2. Event edit dialog - date calculator button
3. possibly more?

[Serg-Norseman]

Horror!
=8-O
Everything worked... when it broke down...

[burtek]

That was actually an issue before, but kept forgetting to report it as I never use those anyway. So it's not 3.6.0-related

[Serg-Norseman]

It’s still strange, because it worked when it was created and introduced....

[burtek]

All I can do is keep fingers crossed for an easy fix 🤷