I upgraded to the 5.1.0 engine last night, and today I noticed this white box thing in my viewport both in the Editor and while Playing in game. I don’t know how to turn it off, and I can’t interact with anything in my level. Included is a screen shot.
Hey again @Cmdr.Kokoro!
It seems like somehow you’ve grabbed something and can’t let go. Check it out here: I grabbed my “Place Actors” element (which it looks like you’re missing from the left)
Try going up to “Window” in the top bar and enabling/disabling some things and see what happens. I am not aware of this bug so I’m not sure of a fix.
Thank you. I ended up rebooting my computer, and the problem fixed itself.
Problem solved.