when jumping against slab that has water above it the game thinks i'm in water for a fractal seconds
this doesn't happen with full block, it's only happen with slab (this applys to other slabs too i believe)
since the attachment is over 10mb i'll just put the link to the video showcasing bug here
link to the video showcasing the bug : https://cdn.discordapp.com/attachments/332971439554691077/704944931474636832/Minecraft_2563-04-29_13-38-48.mp4
alternate link if the discordapp one doesn't work : https://streamable.com/tyk7u8
edit : i am able to reproduce the bug on mobile version as well and it's also happening in other gamemodes such as creative and adventure