PC, Is this happening in the full screen mode or any mode?
Anything in the windows management mode about the default resolution that is different from your screen resolution?
I can't find nothing related in Preference/ Windows management
Instead in Preference/ Display there is "monitor resolution" that has strange values:
"detected automatically :120x120 ppl"
I am not sure what are "ppl",and 120X 120 confuse me , because sounds as 1:1 image ratio and because 120 seems a very low value (but i don't know the unit used )
My screen is 1600x1060 but 1060 include the space for the taskbar
Finally, is this a new problem that has just cropped up?
I didn't noticed in the previous version
...well also in the old version the monitor space was not used well:
Some script and plugin used all the space, but without consider that what goes under the taskbar is visible but not clickable
But the button was not completely covered by the taskbar, so i could still click the very upper margin of the (Save, Cancel) buttons
Here anyway the problem is much more severe , the Kungfu07 screenshoots show exactly what happens and what instead should happen
Now i can't use Gmic with your last 2.7.4:
Gmic is at the bottom of the gimp filter list, i added some plugins and now the list end much below the taskbar.