I have the same issue although for me it mostly happens when charging, very rarely without. This didn't happen before and worse of all they want me to send the phone back even though it's clearly software related, it also happens with cod mobile and rise of kingdoms...(it appears to be with any high demanding game)
Sometimes happen Normal Home screen ,
Sorry to hear about your issues. This is most likely a hardware related issue and I recommend that you contact your local service center as soon as the lockdown is lifted and it is safe for you to do so.
@rijazzali699 I have sent you a PM with instructions for providing a bug report as well.
Unfortunately I purchased my phone online I'm located in Qatar and there is no service center here ......
What is your problem Bro?