On-Line Version Doesn't Appear To Work During Runtime

I am preparing for a class tomorrow. I have tried to run the GDevelop examples/tutorials. When I try to run the tutorial the objects don’t all appear on the screen as they should. Some objects don’t appear, others only partially appear. This is happening on two different computers, using two different browsers (Chrome and Edge), and for different games (Platformer, Geometry Monster, Top Down Racer).

It appears a recent release (since last Friday) had changed the preview code.

Hello

The webapp is limited for the import of resources, it’s fine for demo for now, that’s all.
I recommand you to use the desktop version for class because this bug will not be fixed before tommorow.
You didn’t require admin permission for install GDevelop.