Everyone is Steve or Alex skin

This bug has existed for the longest time, and it is really frustrating that Minecraft has not fixed this yet. Everyone is my game has a Steve skin, which is so annoying. When I play with friends or online, I don't see anyone's skins. By the way, before the 1.16.200, this bug was not happening for me, but after the 1.16.201 hotfix, this bug resurfaced. Please fix this.