Display discolouring after battery replacement

Hello,

My issue is discolouration at display edges after battery replacement. The phone is iphone 11.

So i needed to replace the old battery (it was 78% and not bulged), removed the old one no issues, put the new one flush, cable on the side (not on top), removed the old adhesive, put the new adhesive on the sides, I had to redo the adhesive, because i did not manage to put it correctly at first and after that closed the phone without much effort and the display fitted fine without effort, i put the screws without overtighting them and the next few hours everything was great, but at the next morning (the phone was left charging overnight) it had yellow discolouring on the edges of the display - like there was pressure from the inside, opened the phone again removed the adhesive (to remove the pressure if there was any) and closed it after that but the discolouration unfortunately does not go away. When i opened it the battery looked fine there is no bulging.

So now I am thinking of putting a new display but I am worried that the new one will end up like the other.