Motor6D Bug: Attaching Motor To Tool Handle Causes Problems When Reparenting To Backpack

System: Windows 10
CPU: AMD Ryzen 5 5600X 6-Core Processor
Memory: 32.0 GB
GPU: NVIDIA GeForce RTX 3060 Ti

This issue has been happening for years, and is still happening at 2026-07-22 10:16 PM EST.

The issue I am seeing is of the Character unequipping a tool, and the character then being frozen momentarily on the server.
I have deduced through various tests that the issue stems from the Tool being in the player’s backpack, and the engine’s default Tool Handle Logic registering it, as this does not happen if the Tool’s part is named anything other than ‘Handle’. It also ceases to happen if the place’s SignalBehavior is set to Immediate, meaning it is the engine doing something weird when it detects a Motor6D attached to a tool’s Handle that is parented to the player’s Backpack.

VISUAL AID


You are able to see in the above video that the Character freezes. The Transparent Cube indicates the position the character is located at on the server.

REPRO
HandleRepro.rbxl (65.0 KB)

Expected behavior

The intended effect I want is for the character to resume physics as normal after unequipping a tool, however, when I unequip the tool, it freezes the character on the server momentarily.

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Thank you for bringing this to our attention. Upon review, we found that this report is a duplicate of an existing case regarding the same issue. Please be assured that the matter is already being monitored and addressed under the original report.

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Motor6D Bug: Attaching Motor To Tool Handle Causes Problems When Reparenting To Backpack - Bug Reports / Studio Bugs - Developer Forum | Roblox

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