Reproduction steps:
1. Open the attached Unity project "MemoryProfilerIssue.zip"
2. Open the Memory Profiler window (Window > Analysis > Memory Profiler)
3. In the Memory Profiler press the "Capture New Snapshot" button and open the snapshot
4. Then navigate to Summary > Filters > Data Type > Right Click and press on Group
5. Try expanding and shrinking the rows in the table
6. Observe that the rows disappear in the table
7. Go back to the Editor and observe the errors thrown in the Console window

Expected result: No errors are thrown in the Console window, the rows of the Table filter in Memory Profiler do not disappear
Actual result: "NullReferenceException: Object reference not set to an instance of an object" error is thrown in the Console window and Table filter data disappears when expanding and shrinking rows in Memory Profiler

Reproducible with: 0.6.0-preview.1 (2019.4.38f1, 2020.3.33f1, 2021.3.1f1, 2022.1.0f1, 2022.2.0a11)
Not reproducible with: 0.5.0-preview.1, 0.5.1-preview.1 (2019.4.38f1, 2020.3.33f1, 2021.3.1f1, 2022.1.0f1, 2022.2.0a11)