How to reproduce:
1. Create a new project
2. Import the Profile Analyzer package from the Package Manager
3. Open the Profile Analyzer window (Window -> Analysis -> Profile Analyzer)
4. In the Profile Analyzer window click the Compare tab and load the data (capture.pdata and capture2.pdata)
5. Make sure 'Pair Graph Selection' option is disabled
6. Select a frame in the upper data and then in the lower data
7. Using the keyboard commands (+, -, <, >) change the Frame Range

Expected result: there's a way to choose which Frame Range gets modified
Actual result: keyboard commands affect only the last modified Frame Range

Reproducible with: 0.5.0 - preview.1 (2018.4.20f1, 2019.3.6f1), 0.6.0 - preview.1 (2020.1.0b2, 2020.2.0a5)
Could not test with package versions: 0.4.0 - preview.3 , 0.4.0 - preview.5, 0.4.0 - preview.6 (keyboard commands not introduced)

Workaround: right-click on the Frame Range and change it from there or reselect the Frame Range and then use the keyboard commands