[GREENFOOT-629] Autocompilation stops working

It's been reported by a number of users that auto-compilation stops working occasionally. Eg see:

https://www.greenfoot.org/topics/59642/0

It seems likely that the major re-work necessary for the next major Greenfoot release will fix this by-the-way, but if we can get a reliable way to reproduce the issue then we should test before release.

Workaround is to re-start Greenfoot.

Issue metadata

Issue type: Bug
Priority: Medium