Black Update Screen

[xx_sleetoo_xx]

Model: ZE620KL
RAM: 4G
Firmware/APP Version: WW-16.0610.1812.58
Frequency of Occurrence: 1.8
Rooted: No
APP Name: Settings

I recently updated my phone to android 9, but when I looked for an update i noticed my search for update screen have a darker color, previously it was a white page, I've added a darker theme a time ago but i uninstalled later, i don't know if this may have influenced or its just a bug with the android 9 update, anyone else have experienced this problem? Thanks sorry for my rusty english.

[ServiceE_Asus]

Hi xx.sleetoo.xx, Good day. For exclude caused by software, please kindly try to backup phone files and factory reset. Sorry for any inconvenience.