I own the Monster Manual compendium expansion and have compendium sharing enabled on a campaign to which I've given another player GM control. The GM is able to see Monster Manual creatures in the compendium search interface but when they try to import a Monster Manual creature by dragging them to the map it just creates a blank sheet with the name of the creature and no Monster Manual token image or portrait. When the campaign owner (me) attempts to import the same Monster Manual creature by dragging it to the map it generates the correct character sheet with the appropriate Monster Manual token image and portrait. The campaign uses the default 5th Edition OGL sheet and is set to use D&D 5th Edition compendium.