Since upgrading to 4.11.3 I cannot resize maximised windows - there used to be an option in the "move windows" settings that allowed this but it is gone and resizing a maximised winodw appears not to be possible anymore [I can, however, pick up a window and move it on the apparently invisible borders but not resize it]. This was a very useful feature that I used all the time and I can't understand why it had gone?
On the contrary: the window can always be resized (eg. try Alt+right mouse button) About borders: see dupe. *** This bug has been marked as a duplicate of bug 324011 ***
Well I do not want to press alt-r-click, I'd like the previous functionality where I could pick up the border and left-click drag to get the size I wanted!