Design Studio crashes when adding and removing Documents folder to User assets - custom folder

Steps to reproduce:

• Create a  project
• In Content Library - User assets, click + to add a custom folder
• Add Documents -folder (C:\Users\<user>\Documents)
• Remove Documents folder from User Assets by clicking trash can icon
• Close the project from File -> Close all projects and editors
• -> Design Studio crashes. If crash does not happen, try creating a new project, might crash then.
• I was not able to reproduce the crash with any other folder, with the same steps.