The first issue being that it doesn't keep artwork open, so if you don't save it at the end of your session even if you don't close the app it will close your work and you loose any progress. Second which is my biggest issue, is that even when you own a license it will randomly deactivate and want to reverify which is not good on a tablet without internet. Even if you connect to wifi, you will loose your work due to no autosaves when it's unactive.