Label font size is incorrectly displayed on Mac Retina monitor when using Rich Text

Unity: IMGUI Framework

This issue has been closed as a duplicate

6.2.X

6.1.X

6000.1.0b13 onwards

6.3.X

6000.3.0a1

How to reproduce:
1. Open the “IN-101503_FontSizeBug“ project
2. Open Window > FontSizeRepro
3. Observe FontSizeRepro window

Expected result: Font size is the intended size (relative to other UI font in the window)
Actual result: Font size is very small

Reproducible with: 6000.1.0b13, 6000.1.3f1, 6000.2.0b1
Not reproducible with: 2021.3.51f1, 2022.3.62f1, 6000.0.49f1, 6000.1.0b12

Reproducible on: macOS 15.4.1 (M1 Max)
Not reproducible on: Windows 11

Note: This only reproduces on a mac Retina screen