Text Artifacts in 64 bits

Hi everyone,

I'm not sure i'm in the right sub but I worked on this app and it was working fine on iOS until I tried to build a 64 bits version of it to meet the new Apple Guideline.

I managed to make a nice build without any error but I have these weird artifacts on the texts and I don't find anything like it online. Moreover, when the screen change (when I click on a button for example), most of the texts appears for like 1ms and dispaear instantly, the remaining text is the...

Text Artifacts in 64 bits