I’m new to the forum. The reason I joined was because I’ve just lost nearly all my current project NeoPixel2 by mistakenly deleting what I thought was a blank label in the Designer view. Yes a warning box appeared but as I was sure it was a blank label I went ahead. Yes, the warning said all associated blocks would be deleted. If it had said which blocks were affected I wouldn’t have clicked. Why isn’t there an undo button? Control_Z doesn’t work (I’m using Windows10) with MIT App Inventor so I can’t use that.
MIT App Inventor encourages users to experiment as a part of the learning process. How can users learn effectively if making simple mistakes lead to catastrophic non-rectifiable changes ? I noticed several closed threads on this same topic on the forum - all with no apparent response from MIT App Inventor.
Come on, MIT App Inventor ! This needs sorting !