It was previously equipped before the update. After the update the legs were no longer showing as equipped. I open the game, go to edit character > body > legs and it’s not able to be equipped.
I had an empty slot and the legs are able to be equipped if I created a new character so the bug seems to be if it was already equipped before the update.
I found a solution. Flyspeed was set to 0.5, when it should be 0.05. Needed and NBT editor to change it
I have this issue too. I do not have any packs.
Crash Report
I updated the game via Microsoft Store.