How do I get my Zenpad 3s10 screen to turn off automatically?

I've got a Zenpad 3s 10 tablet and while it is pretty much excellent, I've been having issues with the screen turning on by itself (due to proximity to magnets in the cover/my bag?) and it does not turn itself off. It basically just stays on the lockscreen. This problem eventually leads to a complete battery drain.

I feel like I've gone through all of the relevant settings to try to disable the screen from turning on automatically but the issue is still happening.

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