Every time I switch between them, D3Helper gets 'stuck' infinitely clicking stuff on a loop, something like opening the passives pane, clicking already chosen passives, and closing it again. It's way too fast for me to actually see what it's doing. The only way out that I figured is just closing the process thru task manager and reopening Helper. The feature itself works great - it chooses all the skills and everything, even the passives, it just gets locked and forces me to reload it. It's just inconvenience, but yeah, still a pretty nasty bug.