How to reproduce:
1. Create a new project
2. Import the Profile Analyzer package from the Package Manager
3. Open the Profiler window (Window -> Analysis -> Profiler)
4. Make sure Profiler recording is set to Playmode and is enabled
5. Enter the Play Mode
6. Open the Profile Analyzer window (Window -> Analysis -> Profile Analyzer)
7. In the Profiler window stop the recording
8. In the Profiler window start the recording again
9. In the Profile Analyzer click the 'Pull Data' button

Expected result: the data gets loaded from the Profiler to the Profile Analyzer
Actual result: grey and empty data gets loaded to the Profile Analyzer

Reproducible with: 0.4.0-preview.6 (2020.1.0b9, 2020.2.0a11), 0.5.0-preview.1 (2020.1.0b9, 2020.2.0a11), 0.6.0-preview.1 (2020.1.0b9, 2020.2.0a11), 0.7.0-preview.1 (2020.1.0b9, 2020.2.0a11)
Not reproducible with: 0.4.0-preview.6 (2018.4.22f1, 2019.3.14f1), 0.5.0-preview.1 (2018.4.22f1, 2019.3.14f1), 0.6.0-preview.1 (2018.4.22f1, 2019.3.14f1), 0.7.0-preview.1 (2018.4.22f1, 2019.3.14f1)
Could not test with: 0.4.0-preview.3, 0.4.0-preview.5 (couldn't load Profiler data using newer Unity versions)

Notes:
In Unity versions where the issue doesn't reproduce the Profile Analyzer 'Pull Data' button is active after the 6th step. In Unity versions where the issue reproduces the 'Pull Data' button is inactive after the 6th step until the 7th step is done