How to reproduce:
1. Open the attached "ProfileAnalyzer" project
2. Open the Profiler (Window->Analysis->Profiler)
3. Load the attached "A.data" file into the Profiler
4. Open the Profile Analyzer (Window->Analysis->Profile Analyzer)
5. In the Profile Analyzer press the "Pull Data" button
6. Open the Threads menu (In the Profile Analyzer under the Filters section next to the "Threads:" press the "Select" button)

Expected results: All Threads are loaded correctly
Actual results: Only the Main Thread is shown

Reproducible with: 2020.1.0a11, 2020.1.2f1, 2020.2.0a20 (1.0.2, 1.0.3)
Not reproducible with: 2018.4.26f1, 2019.4.8f1, 2020.1.0a9 (1.0.0, 1.0.3), 2020.1.0a11, 2020.1.2f1, 2020.2.0a20 (1.0.0, 1.0.1)

Notes:
- If the Profiler data was recorded (not loaded in) and then pulled in to the Profile Analyzer the Threads will be loaded correctly