How to reproduce:
1. Create and open a new project
2. Install the TextMeshPro Package
3. Create “UI > Dropdown - TextMeshPro” and “UI > Legacy > Dropdown” in the Hierarchy
4. Change any one property (like Transition to “None“) in the Dropdown components of each UI Element
5. Create a preset of both Dropdown Components (by clicking the slider icons to the left of the three vertical dots) in the Inspector
6. Open the “Project Settings > Preset Manager”
7. Add both presets to the Preset Manager
8. Delete and re-add both Dropdown UI Elements in the Hierarchy
9. Observe the changed fields in the Inspector

Expected result: Both the TextMeshPro Dropdown and the Legacy Dropdown have their presets applied
Actual result: Only the Legacy Dropdown has its preset applied

Reproducible in: 2021.3.40f1, 2022.3.38f1, 2023.3.0b4
Not reproducible in: 6000.0.11f1
Fixed in: 2023.3.0b5

Reproduced on: Windows 11 Pro (23H2)
Not reproduced on: No other environment tested

Note: Also reproducible with Button and InputField Components, but not with the Text Component