Hi, I applogize in advance for pointing out the same problem I'm facing again and again, but I'm now pretty sure the issue is not (solely) caused by iOS memory management for several reasons: 1) it happens randomly as sometimes the history is deleted even with an empty document and just 1 layer with nothing running in the background, while other times it all works fine with many apps running and a 70/80 layers document. 2) I firmly believe the Ipad Pro 2018 is powerful enough to handle Artstudio Pro as none of these problems existed back in iOS 12 and in Dev. Beta 2. 3) No other app I use presents similar issues, and I'm not just referring to normal apps, I'm talking about other art apps like Affinity Photo and Procreate. 4) It does not always relate to switching apps and thus involving memory; I had it happen just now when i lowered the brightness using the control center. Other times it happens while I'm just drawing or mirroring the canvas (which, correct me if I'm wrong, should both not dramatically increase memory usage) 5) I'm not sure how could iCoud and the history be related, since I'm not even logged in to iCloud and the iCloud preference in Artstudio settings is set to off. I would be very grateful to developers if they could take a look at the issue as I love Artstudio Pro and this issue almost ruins it for me.
