ArgumentException error is thrown on assigning any thread when Show Related Object is selected.

Steps to repro:
1. Create a new project.
2. Window > Analysis > Profiler > Enter Play Mode.
3. Select Show Related Objects
4. Assign "Background Job.Worker 9" thread in Thread dropdown.
5. Assign back to "Main Thread".

Actual Result:
ArgumentException error is thrown in the console.

Expected Result:
No error in the console.

NOTE: Please find the attached Stack trace.
Reproducible in:
2020.1.0a5.

Working Fine in:
2020.1.0a4, 2019.3.0b4.

Environment:
Windows & Mac 10.14.