White jumping/no mods

I was just doing my normal Minecraft stuff when I noticed something weird going on with the menu/mobs/items in the game... I can't describe it very well but I did record it:

https://vimeo.com/538262209

(it doesn't fit in the limit)

Also, I don't know how well you can see it, but when I came down there, I saw that the edges of the cow were turning white then back again. like the color got erased then brought back.)This was on my LAPTOP not phone