Library

React / v8 (@fluentui/react)

System Info

System:
    OS: Linux 5.4 Ubuntu 22.04.1 LTS 22.04.1 LTS (Jammy Jellyfish)
    CPU: (32) x64 Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz
    Memory: 49.57 GB / 62.81 GB
    Container: Yes
    Shell: 5.1.16 - /bin/bash

Are you reporting Accessibility issue?

No response

Reproduction

https://codepen.io/MLoughry/pen/YzLwddZ

Bug Description

Actual Behavior

When you click on a <Slider />, and the component unmounts while the mouse button is down, and you then move the mosue while the mouse button is still down, there is a null-ref in useSlider()

Uncaught TypeError: Cannot read properties of null (reading 'getBoundingClientRect')
  at @fluentui/react/lib/components/src/components/Slider/useSlider.ts:269
  at @fluentui/react/lib/components/src/components/Slider/useSlider.ts:287

Expected Behavior

There is no null-ref errror

Logs

No response

Requested priority

High

Products/sites affected

Blocking Outlook rollout

Are you willing to submit a PR to fix?

yes

Validations

• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.