Reproduction steps:
1. Open the attached "PROJECTFILE" project
2. Open the "Assets/Scene.unity" scene
3. Select the “GameObject” GameObject in the Hierarchy window
4. In the Inspector window “Tester (Script)” component, click on “Two Nesting” while holding the ALT key (option key on macOS) to display all nested elements
5. Observe the label visible below “The Field”
Expected result: The label text “Element 0” is fully visible
Actual result: The label text “Element 0” is not fully visible (only “ent 0” is visible)
Reproducible with: 2022.2.0b6, 2022.3.14f1, 2023.2.3f1, 2023.3.0a17
Not reproducible with: 2022.2.0b5
Couldn't test with: 2021.3.33f1 (No “Use IMGUI Default Inspector” setting in Project Settings that could be disabled)
Reproducible on: macOS Sonoma 14.1.1 (M1 Max), macOS Sonoma 14.0 (Intel), Windows 10
Not reproducible on: No other environment tested
Note: The issue is reproducible only when the “Use IMGUI Default Inspector” setting is disabled