iPad Pro heating issues.

Hey! I've recently got my iPad Pro Replaced because of heating issues. It got hot just being turned on, and really hot while using procreate. I've got a new one and the problem happened again... I got a third one, and now its slightly better, but I'm still worried. Now, using it (it can only be safari, and This support page) it gets warmer on the longer left side. When using procreate it gest warm in the same place and in the middle on the bottom side (right where Apple logo is). It doesn't matter if its fresh, or with restored backup. Should I try to replace it again, or is it a normal thing?

Thanks in advance!