[GREENFOOT-527] New frame marked as non-fresh if inserted via cheat sheet
If you insert a frame by clicking in the cheat sheet, then it will not count as fresh. This means you'll immediately see "...can't be blank" errors on the frame before you've had chance to do anything, and escape won't work to cancel the frame insertion. I suspect it's to do with the way we're transferring keyboard focus to the frame.
- Issue type: Bug
- Priority: Medium
- Fix versions: 3.0.3