1. That is a cheese prevention from transforming Trees into Text.
2. That is actually a bug that will be fixed next update.
Apologies for that; this behavior was due to errors happening after trying to undo when GAME IS X is made, so I disable undoing in this instance.
Problem is, I have no idea why the undo is not restoring itself upon level restart. I will release a fixed version around mid-to-late January to fix it.
Sorry for any inconveniences. 😞