This change D4033 makes it really difficult to drag the corners in the interface.
Especially with a tablet on a 4k monitor.
It was much faster to duplicate and reduce the windows before this change.
Please also consider to look at the horizontal and the vertical space it's also very small
https://blender.community/c/rightclickselect/K0cbbc/
At least an option for changing these scales/areas would be nice
Thanks for your hard work guys!