I have a catalog with One collection. I enable the catalog for both read and write and then navigate to a folder and select a photo that I want to add to the collection and there is no option to do that on the Right-Click menu. I then navigate to the collection and back to the folder and select the photos to add to the collection and the collection is now available to be selected for the add operation. This was even the case when I already had the collection tab open prior to selecting the catalog. This issue appears even when I deselect the catalog and then select it again.