D855 strange proximity sensor/knockon/wake problem

Hi, I've problem with my g3. When I'm using it outside outdoors when it's not dark yet or while indoors and with lights on everything is fine. The nightmare starts when I use it when it's dark. When I get my phone out of my pocket I can't wake it up, doesnt matter if either I use knockon or Power Button. I need to go to place where light is sufficient for my phone to wake. However if I sleep the phone when it's dark I can wake it up again, even if I put in pocket or something for few seconds. But after like minute when it's asleep and in dark then I can't wake it again. I'm not using any screen protector at the moment, I thought it was it's fault or something (it was cracked but nowhere near proximity sensor) so I put it off, but it didn't change anything. Using G3 32GB D855 with fullmics 5.1 or 5.2 ROM + stock kernel. I'd be happy if anyone could provide any help

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