So, I add a part to a tool named handle, then when i run the game and the character grabs it, he automatically turns upside down and cannot move and all the animations don't work, also tried with other toolbox tools like the Roblox sword and i got the exact same problem.
Recently i tried to do this in my friend's computer and it happened again.

1 comment
Fixed it, when i added a part RoStudio added a weld and it was welded to the baseplate.