How to reproduce:
1. Open user's attached "2019.4" project
2. Open the Profiler (Window->Analysis->Profiler)
3. Open the Memory Profiler (Window->Analysis->Memory Profiler)
4. In the Profiler window set the Profiler to record the Editor (press on the drop-down list at the left side in the Profiler controls and choose Editor)
5. In the Profiler window enable all of the Modules (at the top left corner of the Profiler window press on the Profiler Modules drop-down list and toggle all of the Modules)
6. Enable recording in the Profiler
7. In the Memory Profiler window open the "Snapshot-637293849486777128" Snapshot

Actual result: Frame chart information of all Profiler modules except GPU and Global Illumination disappear
Expected result: Frame chart information of all Profile modules do not disappear

Reproducible with: 2019.3.0a2, 2019.4.3f1, 2020.1.0b15, 2020.2.0a17
and any version of com.unity.memoryprofiler up to and including 0.2.4-preview.1
Not reproducible with: 2018.4.24f1, 2019.3.0a1

Notes:
- Profiler does not need to be recording for the Frame chart information to disappear when opening a Memory Profiler Snapshot
- Restarting Unity Editor fixes the issue