access policy not available in drop down for media source?

Hi,

I'm using 2.2.2 trad.
I've set up my Editor role and access policy and have then set up a media source for an assets/uploads/ directory.
I want the editor to only see the uploads directory using the file browser but i have no access policy options in the drop down. This happens in the User Group/Media Sources Access and in the Media Sources/Access Permissions.
If i add Context Access of Media Source Admin the editor can then view the file browser but of course this allows viewing of the whole FileSystem.
Is there anything i've missed because i didn't have this issue with 2.2.1?
Is this a bug?

Thanks for any help

Ok i've found a way around not being able to assign Access Permissions to the Media_Source by doing what is described in this post: https://forums.modx.com/thread/?thread=74386&page=1