Not sure if the update caused this or not, but that's when I noticed it.
Using Chrome browser on a Mac. Also same problem on FireFox.
Go to Forms> Select the form> Form Editor go down to field I want to edit (or any other field) and nothing. When I hover over fields the cursor changes to a crosshair (to move) or a pointing finger but it won't let me move anything or edit anything.
Any ideas?