Texts are getting clipped in Thread-selection drop-down

Steps to Reproduce:

1. Create a new project
2. Create a cube, Hierarchy > right-click > 3D > Cube
3. Open Window > Analysis > Profiler
4. Select Hierarchy or Raw Hierarchy in the toolbar in Profiler Window
5. Click on Play button
6. Click on Main Thread Tab and select Loading.PreloadManager

Expected Result: Texts should be clearly visible in Thread-selection drop-down

Actual Result: Texts are getting clipped in Thread-selection drop-down

Reproducible on: 2019.3.0b3, 2020.1.0a4, 2020.1.0a3

Note: Before 2019.3.0b3 Main Thread tab is unable to open

Environment: Windows 10 and Mac 10.14