Files Access Control - issue with browsing folders

Edited Post:

I have made some tests and i’ve found something strange:

Case A:
Files Access Control:
File collaborative tag - is tagged with - ACCES_DENIED
User group membership - is not member of group - GROUP_A

User management
User is member of group GROUP_A

Tag Folder
Folder is tagged with ACCES_DENIED

Result
User see the content in the folder but he cannot upload or open anything.

Case B:
Files Access Control:
File collaborative tag - is tagged with - ACCES_DENIED
User group membership - is member of group - GROUP_B

User management
User is member of group GROUP_B

Tag Folder
Folder is tagged with ACCESS_DENIED

RESULT
User don’t see the content ! (that’s we need) and can’t upload, perfect !


As you can see, we don’t have the same behavior if we change “is member of group” and “is not member of group”. Is it a bug?