Using pgAdmin4 v4.1. The computer is running Windows 7, as a KVM virtual machine.
The problem is that when you hover the mouse over the border of a window you see the cross-hairs for moving the window to a different position but the arrows for adjusting the size of the window either vertically or horizontally are near impossible to access. It's as though the landing zone for getting the adjusters is only 1 or 2 pixels tall for vertical adjustments or 1 or 2 pixels wide for horizontal adjustments. When opening the query tool the Query Editor window is too small so I have to make the Query Editor window taller and make the DataOutput window shorter. This is very difficult to do in the version of pgAdmin that I'm using.