Effect file does not always come visible in Assets view

Sometimes Asset view does not show created effect file, even though it was created and saved in library (see attached picture) I was able to reproduce the issue with these steps:

1. Start Design Studio
2. Create new general empty project
3. Make sure Assets view is in your workspace, but does not have focus / is not visible
4. Create an effect in Effect maker view and save to library
5. Open Assets view
6. -> Effect file visible as expected
7. Hide Assets view
8. Close the project (File -> Close all projects and editors)
9. Repeat steps 2-5
10. -> Effect is not visible in Assets