Yup I can say this for sure!
My Nokia 8 suffered from severe image retention from the past 6months
A few mins of usage and everything from previous page starts appearing like Google logo, texts even guns in pubg!
But I've been searching this forum for a solution and somebody posted a workaround - downloading Twilight app and setting intensity at 0% and screen dim at 5%
This actually solved my problem!
The image retention stopped completely from the past 1 month and the display looks awesome now!!
The only drawback is this app needs permission to display over other apps and that'll stop you from using Google pay. Disabling it in notification bar quickly to complete payments and giving it permission again is the only option. A few times after using Gpay I forgot to give necessary permission to the app and the image retention used to comeback in a few mins!
This is a pure software problem.
This display could reach 700nits of brightness and they couldn't calibrate it properly!!
Hmd could easily solve this with an update but they won't or they can't!
I feel sorry for Nokia because HMD will ruin the reputation