My editor has a weird ui bug that completely stops me from working on maps, so I'm doing my civic knight duty and reporting it here. Not only that, but all my previous maps that were considered valid by the editor before now show the same error listed in the screenshot.
https://imgur.com/a/yIPHlIH

The other, way more severe, bug is the scene viewer subwindow on the left not stretching to fit the entire space. This causes the mouse to misselect objects.

Thank you for your time.