Reproduction steps:
1. Open the attached “repro_IN-72301“ project
2. Open the “/Assets/Scenes/SampleScene.unity“
3. Open the “Game“ window
4. Observe how the spacing in the second row (“original“ GameObject) looks

Expected result: There are no spaces between “U“, “A“ and “D“ in the “original“ GameObject
Actual result: There are spaces between “U“, “A“ and “D“ in the “original“ GameObject

Reproducible with: 2023.2.17f1, 6000.0.0b14
Couldn’t test with: 2021.3.36f1, 2022.3.22f1 (not able to resolve the “NullReferenceException: Object reference not set to an instance of an object error” when trying to assign the “original“ font to the Font Asset parameter field)

Reproducible on: macOS 14.2.1 (user’s), Windows 10 (22H2)
Not reproducible on: No other environments tested

Notes:

* Reproducible in Player
* “update_atlas“ GameObject is a modified asset, tested with the “Get Font Features“ option enabled in the “Font Asset Creator“
* “make_new“ is a newly made asset from the font
* The correct spacing is visible in the “update_atlas“ and “make_new“ GameObjects