Secondary Mission Boulder Drop Mission Doesn't Complete, Even If 100% of The Vehicle Is Broken

Can the bug be found among the known bugs in the trello Trello? If so, upvote it there instead!

What is the bug?
Answer: Mission doesn’t complete, even if I destroyed 100% of the vehicle

How often does the bug happen? (Everytime, sometimes or rarely)
Answer:

What device did you play on? (Computer, Phone, Tablet or Xbox)
Answer: Everytime I try to do those “Destroy 99/100% of X Vehicle”

What steps do you need to take for it to happen? List them in very high detail:

  1. Do the crusher as normal

  2. try to destroy it atleast 99% of it

  3. when destroyed 100%, gets stuck at 98.9% with no small parts hanging under the map

Is the bug related to GUI/Interface on the screen? Or did the bug only appear for you? Check yes if the bug didn’t happen for everyone in the server at the same time.
Yes/No: Not sure, but I think this will happen to everyone if they get the same mission

If yes, screenshot all red and yellow text in the developer console and post it here. (Open console by pressing F9 on computer, or by saying /Console in the chat)

Video Proof:

Roblox username: @Compl1catedName