Describe the bug
Additional sidebar items like Outline or Explorer must added after every startup

To Reproduce
Steps to reproduce the behavior:

1. Add Outline with command "Toggle Outline View"
2. Close the App and then restart
3. Outline item on sidebar is missing

Expected behavior
The app should remember the additional sidebar views

Screenshots
Configured:

After restart:

Desktop (please complete the following information):

• OS: macOS
• Version: 11.6

Additional context
This happens also on Explorer view