In the totem editor if you have the "projection" skill (the dash when you double tab left or right), you can use it while editing your totem. You are obviously not supposed to be able to move in the totem editor and this violates that. If you go too far left or right you can even die by reaching the side boundaries and your totem is not kept.

Firestonnne, this is a really bad bug, I'm not sure what it is but make sure you're not using the arrow keys. It should help to prevent the bug happening again.

It's... not that bad? I don't know what gives you that impression but it's not like it's incredibly game-breaking lol.

It doesn't erase your building.If you build something over it,though,the first building will merge with the other one.