How to reproduce:
1. Open the attached project (SplashTest.zip)
2. Press Ctrl+B to build and select a build location
3. Notice the middle of the screen
Expected result: There is nothing
Actual result: There is a "Not responding" dialog window
Reproducible with: 2018.4.24f1, 2019.3.16f1, 2019.4.1f1, 2020.1.0b13, 2020.2.0a15
Notes:
1. Tested on Windows 10 and Ubuntu 18.04 (doesn't reproduce on Windows 10)
2. Once the Splash screen is gone the "Not responding" window disappears after a few seconds