Hello- teacher here using App Inventor. A week ago, 75 students were happily creating custom apps in a Windows/iOS environment.
Yesterday, at least 20% of students found that their apps had become glitchy. This was usually related to imagesprite layout changes where the existing imagesprites were no longer present on the iPhone screen when emulated.
These changes coincided with a change in the App Inventor editor and the appearance of a pop-up window for users.
I would love to resolve this for my students. Any suggestions are much appreciated.