Seen on iPad 14.0.1 (18A393) in portrait orientation. Visit <https://old.reddit.com/r/iphone/comments/jbqbtc/new_vs_old_packaging/> and scroll a bit down. I do have Wipr installed and enabled though I was able to repo even when turning Wipr off via Safari. There's a positioned fixed element on the right hand side sometimes. When this element is partially occluded offscreen (no horiz scroll are btw) and you scroll the page so that it overlaps the right hand side Rules / Guidelines then it will cusses the page to fo into infinite text autosizing.
Reproduces on trunk.
<rdar://problem/70364141>