Reproduction steps:
1. Open the attached “HLG_Bug.zip” project
2. Open the “SampleScene”
3. Expand the “Panel” GameObject (Canvas > Panel)
4. Select any TMP element
5. In the Inspector, check the Auto Size property

Expected result: Text size remains the same size
Actual result: Text size increases and extra padding on the right is visible

Reproducible with: 2021.3.34f1, 2022.3.17f1, 2023.2.6f1, 2023.3.0b3

Reproducible on: Windows 11
Not reproducible on: no other environment tested

Notes:
- The Horizontal Layout Group has the “Control Child Size” property Width checked
- In the Layout Properties of the TMP elements, it is visible that the Preferred Width and Height double in size when the Auto Size property is checked