Sorry again, this is also not a GTK bug. The windows you mention correctly implement resize constraints and I can confirm this on Unity8 17.04.
So I can't reproduce the bug...
Is Xmir running on your system?
Sorry again, this is also not a GTK bug. The windows you mention correctly implement resize constraints and I can confirm this on Unity8 17.04.
So I can't reproduce the bug...
Is Xmir running on your system?