Edit: Ended up finding the answer, apparently this is 5+ year old bug, just found it mentioned here: viewtopic.php?t=17072
This is weird one, I delete a layer, I change decks, the layer reappears (it's not the same layer but it creates
a new blank layer).
I've shot a video to show this issue, please note my screen recorder doesn't seem to record the right click menu when I right click on a layer to delete it but you'll see my mouse move to that location when i do it.
Happy to send this comp to the Resolume team for debugging.