Rc2 certainly seems MUCH better, at least in that one scenario I showed on the video.
I do like helping you squash these bugs, but I'd still think I'd like to have a manual slice OPTION.
Another bug, but it's kinda user error, is when I switch to the layer view pre-emptively, before the thing is ready, I get a frozen screen, rather than being able to switch back to the normal view. Perhaps just greying out the layer view button until it's ready would work.