Logged into my world and the drowning bubbles were above my hunger bar, but i wasn't drowning. I broke out of my house because i couldn't go down my ladder and then i placed my water bucket to hopefully get down. after i went into the water i began floating up at a speed similar creative mode. i'm now 254 blocks in the air, i reloaded the world to stop me from ascending any further but i'm still floating in the air and can't get down. i've tried crouching jumping placing blocks and nothing works.

Extra info: before the bug happened i logged off the world on a bottom slab, and spawned on the same slab, this could lead to something maybe? I'm able to move around just not up and down, i also can't jump.