[Bug] Overview button stops working, all the time..

Right, so for as long as I have had this phone (Sony Xperia 5 iii), I have encountered numerous issues. However, one that I cannot for the life of me not figure out is why my Overview Button stops working. I dont know how to reproduce it, I'm pretty certain it happens at random, when pressing the button.

The expected behaviour is that I should be able to access other recently used apps. However nothing happens. The only way to fix this issue (each time) is, as far as I know, change my default home launcher, back to the stock one, then open a new app and after that it will work again. I use Kvaesitso Launcher as my daily driver, however this bug has affected my throughout all launchers I have used, including the stock one.

At this point I'm looking to find a way to run a script or something to automate the process of changing the launcher and back again, as I'm sick of doing it. No idea if that's even possible yet.

I also just had the phone in for service where I mentioned the problem, along with various other problems. Phone came back with new screen and main board, if thats relevant information.

Anyone have any idea what could be causing this? Or how to fix it?

Would highly appreciate it if you have any tips or tricks. I am desperate.