EDIT: I just logged back in, and it’s gone.
That happened to my sister a few times. I think it’s a glitch where it says there’s rain in a cave but it isn’t really there so the contradicting information freezes it.
That is probably a graphical bug.
I’ve had this happen tons, it’s a really harmless bug but it’s super fun to see how long some of them stretch out. Had one stretch over 30 blocks!
Hey that’s my fishing line!