Spaces in Path confuse the Reference Switcher, when switching to a formerly saved project

The path of a project to reference is C:\blub blub\MyProject.csproj
The first switch from package to project is successful. Switching back works.
Once you now try to switch again into the project (without selecting the project again), the path is: C:\blub%20blub\MyProject.csproj. 

As consequence, the project can not be loaded and the switching does fail. 

Thanks a lot, guys!