Unresponsive Screen and Buttons Only When in Case

I have a 5th generation iPad Air, that I've had for a bit over than 2 years now. I recently had an issue when the iPad goes to sleep for a while, and I try to turn it on by opening the case (with auto sleep/wake) or by pressing the buttons, it either turns on but is unresponsive to touch and the buttons (charging works fine) or just doesn't turn on at all. Holding the top volume and lock buttons don't work. It seems to resolve itself after a few minutes when I can finally do a force restart on it. Interestingly, I took the iPad out of the case and it seems to not have that issue at all. I have the latest iOS 18.4 installed.

Does anybody else have this problem?