RangeSlider strange left thumb behavior

[deadlez]

Describe the bug

The left thumb does not move by the amount the mouse pointer moves.

Steps to reproduce

Set control properties:
Minimum="0"
Maximum="100"
IsSnapToTickEnabled="True"
TickFrequency="0.1"
MinRange="0.1"

Move the left thumb to the right thumb.
Release the left mouse button.
Hold left mouse button on left thumb.
Move the mouse pointer to the right thumb.
Slowly move the mouse pointer back to the left thumb.
The left thumb will begin to move to the left for a long distance (there is no such behavior with the right thumb)

Link to a repository with an example:
https://github.com/deadlez/RangeSlider

Expected behavior

The movement of the left thumb is proportional to the movement of the mouse pointer (same as the right thumb works)

Actual behavior

Movement of the left thumb is not proportional to the movement of the mouse pointer (too large)

Environment

MahApps.Metro version: v2.4.9
Windows build number: Win10 21Р2 [19044.1889]
Visual Studio: 2022 17.2.6
Target Framework: .NET Framework 4.6.1

Video

RangeSlider.mp4