How to reproduce:
1. Open the “IN-98244_TestScaleConstraint“ project
2. Open the “SampleScene”
3. In the Hierarchy window select the “Parent (0.5 X Scale)” GameObject
4. In the Inspector window change the Transform Scale X value to 0
5. Observe the child GameObject

Expected result: The child GameObject scale does not change
Actual result: The scale changes

Reproducible with: 2021.2.0b1, 2021.3.50f1, 2022.3.60f1, 6000.0.45f1, 6000.1.0b13, 6000.2.0a8

Reproducible on: macOS 15.3.2 (M1 Max)
Not reproducible on: no other environments tested

Notes:
- This issue also reproduces if the GameObject Scale is initially 0 and is set to 1. This can be reproduced with GameObject “Parent (0 X Scale)”.
- In 2021.2.0b1 the issue reproduces only be scaling the Parent who is initially non-zero scale to zero.