I've seen this several times in the last week, its intermittant. This time I did screen captures of what it did. This is on a Windows 10 desktop PC, latest everything, including latest Fusion.
I was working in a drawing, saved it, then exported a PDF of it, when all done with that (and the upload was complete from the save before creating the pdf) I closed the drawing. The tab for the drawing went back to Untitled as a new one, but the window itself did not go back to the blank project as normal, the drawing stayed on the screen, though the tree on the left of the main window went back to normal. I could not zoom in/out, or do anything in the main window. This is what it looked like:
Then I tried opening the project file, and it looked like this now, main window still stuck though the components and timeline show now:
Still unable to do anything in the main window, so I closed that, and it looked like the first picture again. Then, opened a drawing file, and things worked again. I was able to move around in that drawing. On closing that, it went back to normal again:
As I said, I've seen this several times in the last week, each time after closing a drawing file. Once I had a normal model project file open at the same time in another tab, and it then left the tab I tried to close open as 'untitled' next to the model tab. Very strange behavior!
