Whenever I change somehting in a .storyboard file it won't update visually.
- If I change a constraints constant value it doens't update (and it doesn't turn yellow or red or anything)
- If I delete a view it looks like it's still there although I can't select it anymore
- If I move a UILabel it looks like it didn't move, but I can only select it again in the position I moved it to
If I restart Xcode then the UI is updated. I've tried the latest Xcode version and the 11.5 Beta version too. I've tried rebooting the computer, cleaned build folders, derived data and reinstalling the command line tools.
UPDATE: I realized that only ONE view controller is bugged, all the others update normally.
It is not really an XCode issue.
I once had similar problems, because I opened files with "Recently opened" menu.
For some reason I don't remember, that was not the active file on screen, but another copy !?!
So, I just opened file by selecting directly in the file list on the left and everything worked again.