After a recent Roblox Studio update, all of the frames in my game which contain viewportframe objects are covered by a large loading screen, as seen in the image below. This appears in both Roblox Studio and Roblox Player. It sometimes goes away after I click the, “Current: Client,” and, “Current: Server,” buttons in Roblox Studio.
Don’t see how it’d be either when OP clarified that a loading screen was not added and loading screens aren’t bugs. It most likely has to do with something internally in terms of rendering or something is forcing it on.
@OP have you checked the hierarchy of your Gui when you start a new test server in the instance that something may be getting added?
Thanks for the help, everyone. After checking PlayerGui and deleting things until I found the cause, I found that one of the models in a viewportframe had a screengui inside of a part, which, apparently, was being rendered by the viewportframe.