Unable to clear console compile errors that were reported during compilation of .asmdef assemblies on startup

Steps:
1. Create a folder with .asmdef file and default script in it
2. Introduce compilation error to script and observe error in the console window.
3. Reopen this project. The Same compilation error appears in the console window.
4. Fix error in the script.

Expected: compilation error gone
Actual: compilation error still shown in the console window and prevents entering playmode.

Regression introduced for 2018.1.0b6, by https://ono.unity3d.com/unity/unity/pull-request/60401/_/2018.1/compilation-pipeline/compile-asmdef-on-startup