6 challenge is "just enough" to be fun, but you don't know that blue crab moves slower than you? Sounds legit...

option+enter also does not work for me. And no I'm only using a single monitor. I'm gonna try to change my resolution and see if that makes a difference. Will report back. Oh FYI I have no idea if this is a new thing, I've so far only ever played on my phone!

Yep, but all that does is get me back to being able to click and making it disappear again unfortunately!