Started the Side Scroller Tutorial ...
Some observations (bugs?)
1 - After placing the Jump Thru blocks on a Tree ... and testing them ... I hit the W key to reshow the dialog ... it hung. Had to exit, restart level (didn't have to totally exit which does say something I guess).
2 - The HIDDEN block area is already placed ... you can see that when editing ... so I didn't have to do anything other than play thru.
3 - When I tried to exit Game Machine ... hung with Windows (10 Pro - 1903) wait cursor and never exited ... clicked on window and Windows Dialog came up to force shutdown or wait. Tried Waiting ... eventually had to force shutdown.
4 - If remove or change a block ... is there an undo option? Tried Ctrl-Z ... nothing. Would be nice to Undo at least some changes if I wanted.