Reproduction steps:
1. Open the attached “IN-107815.zip” project
2. Open the “SampleScene”
3. From the Hierarchy, select the “SceneVariable” GameObject
4. In the Inspector, find the “Variables” Component
5. Click on the dropdown next to “Value” property
6. Select any String from the Search pop up
7. Observe the “Value” property

Expected result: The String gets selected
Actual result: The value remains as “None (String)”

Reproducible with: 1.5.2, 1.5.5 (6000.0.55f1, 6000.2.0f1, 6000.3.0a4)
Couldn’t test with: 2022.3.64f1 (Could not downgrade)

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Notes:
- Every once in a while the String does get correctly selected, but creating a new Variable always reproduces the issue
- Similarly, trying to use a Localized String in a custom node: it’s not possible to set a default value, and you only get a connector (unlike types such as String). This can be observed in the “TestGraph.asset”