This reinforces my guess. PTR has TWO tints of this specific type of illusion (the one you’re all talking about, and a purple “void” one). I think they rushed the “pre-purchase special” into production early, but aren’t really going to release it bug-free until 8.3, when they release both tints.
Just a guess, though. I have no specific insight, other than understanding the mindset of software development management.