Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Scenes/SampleScene“ Scene
3. Enter Play Mode
4. In the Game View, open the DropdownField at the top of the window
5. Observe the DropdownField drawer options
Expected result: Three options are present: “A”, “ “ and “C”
Actual result: Only “A” and “C” options are present
Reproducible with: 2023.2.0a19, 2023.2.13f1, 2023.3.0a19
Not reproducible with: 2021.3.36f1, 2022.3.21f1, 2023.2.0a18
Fixed in: 2023.3.0b1, 2023.3.0b11
Reproducible on: Windows 11
Not reproducible on: No other environments tested