How to reproduce:
1. Create a new project using the default 3D template
2. Open the Profiler window (Window->Analysis->Profiler)
3. In the Profiler window, select the 'Profiler Modules' dropdown menu
4. In the dropdown menu, click the cog icon
5. In the opened Profiler Module Editor, add a new module (by clicking the bottom-left 'Add' button)
6. Add a single counter from the 'Available Counters' list
7. Click 'Save Changes'
8. Navigate to the Profiler Module Editor again
9. Enter the Play Mode
10. Add a counter again to the previously created module

Expected result: There are no errors thrown
Actual result: "IndexOutOfRangeException: Unable to update module 'New Profiler Module 1' at index '-1'." error is thrown

Reproducible with: 2021.2.0a17, 2021.2.0b2, 2022.1.0a2
Not reproducible with: 2019.4.28f1, 2020.3.14f1, 2021.1.14f1, 2021.2.0a16