Huawei Mate 20 pro?

I have the following problem. So I have the Huawei Mate 20 Pro and for a long time when I'm in an app or want to close the apps it always happens that my mobile phone simply locks itself (i.e. Key lock is activated) the mobile phone has already been reset and the error is still available. Does anyone have a solution why this could be? The support from Huawei sucks, so I thought I'll try my luck here

Have no problems with that.

It may be due to the apps described.

Have you ever switched off the key lock?

So apps are as an example the following: Camera, Snapchat, Instagram, so no apps that should actually cause problems. And what exactly is meant by switching off the key lock? Is there a function or how? ^^

Sounds more like a software ware error. Just wait until a new update comes. If not, bring it to the store if the guarantee is still in place and have it sent in

The same apps run or ran with me without any problems.

The screen lock can be switched off yes

Since I had the problem 4 or 5 updates have appeared, so far nothing has happened.

Anyway, thank you, I called the support, I'll send the cell phone in.