As per your query, we want to inform you that this is not a bug or issue, It happens due to the Adaptive brightness feature enabled on your Samsung device, this feature allows the touchscreen to automatically adjust its brightness based on the surrounding environment, you can follow the below steps for resolve your device issue:
① Change the display mode to ‘Light’ mode. (Settings > Display > then select the ‘Light’). ② Alternatively, Adjust the display brightness a little bit brighter. (Settings > Display > adjust the Brightness to a brighter level).
In case the issue still occurs, kindly report the problems with a log file. To share a log file, click on the Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).
