Black screen on incoming calls in Xiaomi Redmi note 9 pro 128GB. - Redmi Note 9S / Note 9 Pro (Indian Model) Question

Happy New Year with health and optimism.
One question, they brought me the Xiaomi Redmi Note 9 Pro (128GB) Interstellar Gray (GLOBAL VERSION) as a gift and while it worked perfectly for a week until I installed MIUI 12.0.1.0 (QJZEUXM) and for 2-3 days it worked well and suddenly yesterday it showed me some messages when I went to unlock it for not covering the headphone jack and in incoming calls the screen turns black and I can not end the call!
I turned off the pocket function and the 1st problem is almost solved, while the 2nd with the screen tan remains.
Has it happened to you or a Redmi Note 9 Pro user?
How can it be solved?
From searching the internet in general I found various articles that other users have it and most likely it is a problem of proximity or proximity sensor!
Thanks in advance.

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https://goo.gl/photos/DZLSSw3JjETyuJQr7
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Hi guys,
I have a problem with my colleague's Xiaomi Redmi Note 5 as can be seen in the attached video.
Couple weeks ago I replaced his cracked LCD display without any problems for a new original LCD unit.
Today he sent me this weird video of the behaviour of his phone - the phone is launching apps and do other crazy stuff without any user's involvement as you can see at the video...
Xiaomi Redmi Note 5 - Weird behaviuor
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Martin.
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Hello! Two weeks ago I bought Mi 10 5G (8/256Gb) and it wasn't cheap. That's why I expect everything to work perfect.
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HITMAN_74 said:
Hello! Two weeks ago I bought Mi 10 5G (8/256Gb) and it wasn't cheap. That's why I expect everything to work perfect.
I've noticed a bug on my always on display. After some time it just disappear and the screen is black. Also noticed that it doesn't always show the animation when notification comes, instead it lights up the screen. Running MIUI Global 12.0.3 stable.
Other than that, phone is perfect.
Did anyone else noticed the same?
Click to expand...
Click to collapse
Just read text from screenshot in attachment

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