Multiple non interactable Worker Processes are active when calling undelayed editor processes in the InitializeOnLoadMethod

How to reproduce:
1. Open the attached “IN-137236.zip” Project
2. Observe Editor processes

Actual result: Multiple non interactable worker process windows are present
Expected result: Only Editor and informational windows are open and present

Reproducible with: 6000.3.11f1
Not reproducible with: 6000.0.72f1, 6000.3.13f1 6000.4.2f1, 6000.5.0b3, 6000.6.0a2

Reproducible on: Windows 11, Windows 10 (user’s)
Not reproducible on: No other environment tested

Workaround: Use EditorApplication.delayCall in the “[InitializeOnLoadMethod]” code

Note: Issue appears to no longer reproduce if the project is downgraded or upgraded