Hi there!
I already submitted this to the feedback section in settings, but I’ll put it here as well to see if other people have the same issue:
It’s nothing too bad, just a visual bug that when swiping down to access Quick Settings while holding the phone horizontally, the tile for Bluetooth devices pops in and out suddenly as opposed to slowly fading in and out like the rest of the tiles.
I add a video to show the bug
Greetings from Mexico! 
