yeah i got the stained glass window trees too. and for me it was steel doors turning into stairs up.
so basically this is a Roguelike, you should get used to having to start over often, either because of dying alot or new updates. if you don’t want to have to start over because of new experimentals then consider waiting until the next stable release which promises to be pretty much bug free and have a lot of content, and sticking with that.