Strange stain on the screen

[Aligosla]

Model Name: Zenfone 9

Firmware Version: WW-33.0804.2060.142

Rooted or not: No

Frequency of Occurrence: Always

APP Name & APP Version (If your issue relates to the app): 

 

Yesterday without any unusual use, my Zenfone 9 appeared with a stain on the screen, the strange thing is that when you press it it disappears (As seen in the attached video), apparently some internal component is pressing and marking the screen. It did not fall to the ground, it did not hit itself, it has not had any bad treatment. This is very curious, and in Chile there is no mobile support. I can't use the warranty, does anyone have any idea what I can do?

  

[ambrat]

Did anyone find a solution to this? For me, the stain appeared again today after a few months of having sent the phone for repair.