“UnityException: CreateScriptableObjectInstanceFromType can only be called from the main thread" errors are thrown when the VisualTreeAsset layout has text and it is assigned to uiDocument.visualTreeAsset property

Reproduction steps:
1. Open the attached “Project” project
2. Open the “Assets/Scenes/BootstrapScene.unity” Scene
3. Enter the Play Mode
4. Observe the Console Window

Expected result: No error is thrown
Actual result: Two “UnityException: CreateScriptableObjectInstanceFromType can only be called from the main thread" errors are thrown

Reproducible with: 2023.2.8f1
Could not test with: 2021.3.34f1 (“error CS0246” and two “error CS0115” compilation errors), 2022.3.19f1 (“error CS0246: The type or namespace name 'UxmlAttributeConverter<>' could not be found” compilation error), 2023.3.0b4 (“error CS0101: The namespace '<global namespace>' already contains a definition for 'IronSource'“ compilation error)

Reproducible on: macOS Sonoma 14.1.2 (Intel), Windows 10 (user’s)
Not reproducible on: No other environment tested

Note: The errors are thrown when exciting the Play Mode as well