[GREENFOOT-448] Toggling 'abstract' does not recompile
When adding an abstract method, you get the " is not abstract" error \- ok.
But when toggling abstract for the class the error does not disappear, and the class does not seem to compile.
When removing the abstract method, it compiles correctly (and produces correct Java). The abstract method can then be added later \- that works.
- Issue type: Bug
- Priority: Low
- Fix versions: 3.0.1