I didn't encounter any bugs in the game, but the editor does have a few (plus some feedback):
- The exits can not be removed (can only be removed by re-setting the map size)
- When one blob moves into a portal and the other one dies in the same move, then the blob in the portal will be gone in the editor window (and you have to place a new one).
- There is no option to link two portals. I guess that it works automatically, but there is also no indication of which portals are linked.
- The exits can only be placed at the top. It would be nice if they can also be placed on the sides.
- The created levels cannot be saved.
Ofcourse it is awesome that there is an editor.