Ok, I tested on two other discourse communities that I am a part in. Here are the results.
DevSupport uses the default Dark theme while the Goat Sim 3 forum uses a special theme. Both tested on iPhone 13 Pro, this time on Chrome for iOS.
So, it seems that default color scemes are causing this issue? Not sure though why @Firepup650 you cannot repro 
EDIT: Tested to see if the profile picture made a difference on goat sim 3 forum. Nope