Hello
it is when you're looking the Family Table info page from a Workspace (for example in embeded ProE browser). And that the instances are not in the Workspace.
It permit to see when you download the non full family table in the Workspace, which instances are present in the local cache or not ....
If you switch to the "common space" info page, or if you download the missing instances in the Workpace, You will see the normal icons for all the family table
regards
Gregory