Good day everyone!
So I got some responses from the R&D team and I need you to try a couple of things.
From the logs we got the devices triggered an auto-calibration to avoid stains, which might have caused an issue.
1) Check screen protector is used and if it is covering the Proximity-Sensor location (Per Picture). Remove screen protector if applicable.
2) Clean the P-sensor location if oily or dirty. Use a lightly damp microfiber cleaning cloth with a few drops of water.
The sensor itself is located here
Please update me if it produces any changes.