So Samsung don't think this is an issue that needs to be ansvered? I have the same issue and it is very very annoying. I can't really do anything with the phone. I am not going to do factory resets etc unless someone can point out and explain why it would help. I have wasted already hour after hour while I have tried to resolve this issue. My S9 has been in use for 9 months now and until yesterday it has been working just fine and I have been quite pleased to it (excluding bixby which I have disabled for a reason).
The phone received an update a couple of days ago and the android version was updated. The problem has been on since. I really can't do anything with the phone. All apps keep minimizing randomly. Usually after few seconds. Rince and repeat.
I took the screen cover off since it was in bad shape already. Disabled PIP and power saving modes. It still thrives like a cancer in my phone! Oh, and btw this is a 900 € phone (originally). Where is the fix?
I thought I was the only one with this issue! Typing is such a pain. I can't even complete a word without this "minimizing" interruption. WTF is wrong with our phones?
Stupid samsung update messed up a lot of phones hopefully they will make an update to fix it I had the problem for a month and I called them saying some suggestive things lol