1. If there's not a share url yet (i.e. you haven't turned sharing on) then many of the options in the share tab are disabled. 2. The "Filtering is disabled" messaging is confusing -- we should probably change that to something like "no filters selected".
I should also note that if you expand the controls in the bottom of the "Display" tab, the filtering options are also there (and can be used before you turn on the share). So there's a little bug/inconsistency here as well.
If this isn't working, can you let me know what browser / OS you're using.
Ok, I had the same in mind and we were talking about this one: it would be good to add a filter allowing to hide the rejected images; instead of only showing the picked ones.
To avoid any confusions: we agree that this filter is totally independent of the one in the grid view?
For rejected images, we made a change in October so those will start getting hidden from shares by default. Because we didn't want to change the photos displayed in existing shares though, some shares won't have that behavior by default. On LrWeb, just going to the display tab or applying one of these flag/rating filters will update the share so that rejected photos are hidden.