Prime freezes when I change between square and round mode multiple times

Hello guys. I have a minor problem with the watch and I say minor because it doesn’t appear very often. If I change between round and square mode many times, the watch freezes and starts getting hot and I have to push the power button in order to reboot. This happens especially when I use the fb messenger lite app, but it has appeared also when I use the macrodroid app or even when I am in the home screen (when I see my watch face). I use the UL launcher, maybe it’s a glitch of it? Has anyone the same issue?