"New Folder"-Button disabled?

So I'm currently working on a quite big project with a lot of folders and subfolders in the media panel, and at some point (Don't know when) the "New Folder"-button got deactivated, it is greyed out and isn't clickable anymore. I can still create new folders through the context menu, I assume this is a bug?
Comments
Hi Robin,
The New Folder Option should be 'Greyed Out' if you have Group by Media selected in the Media Panel. The bug here is that you should not be able to create Folders with this option selected. Is this the case?
Thanks,
Ady
Hmmm, very interesting. Could you upload the Project for us, don't need the Media just to see if it's something that will replicate here.
Upload Link
Cheers,
Ady
EDIT: Upload is done!
Hi Robin,
Yeah that's a bug, is now fixed internally but can also be fixed for you quite easily. Basically the Project had incorrectly saved a Search you did in the Media Panel into the Project file.
To fix it type anything into the Search Bar with the Media Panel & press Return, then use the little 'x' next to it to clear the Search then the New Folder button will re-enable.
Thanks,
Ady