[GREENFOOT-537] Class state sometimes shows compiling instead of error
On the right-hand side class diagram of Greenfoot, it is possible to get in a state where grey slashes show on several classes, including one which has an error (and thus should have red slashes). To the user, this looks like Greenfoot is stuck mid-compile, and only by opening all uncompiled classes can you find the one which actually has an error.
[Compilation, etc, is working correctly, it's just an interface bug in not showing the state correctly.]
- Issue type: Bug
- Priority: Medium
- Fix versions: 3.0.3