See Resources in collections not showing in info pane.
• Open Library in Cover View with the Info panel visible.
[• Set it to display a Collection.]
• Select a resource.
• Look in the Info panel.
>> "No Collections found". Not even the Collection you're displaying.
There also seems to be an issue where the very same Collection shows a different number of resources in Library and in Collections (see screenshot in the original thread), but I haven't reproduced that.
These seem to be Mac only and Cover View only bugs. Could be 10.6 only or stable only, since KS4J couldn't reproduce it on 10.8 and beta.