It seems as though when a person has been marked as deceased, their name (associated with their ID#) should be removed from the Invite more family list on the website.
If deceased persons were removed from this list it would make if much easier to find the living to invite. It is also very awkward viewing these ones, since you can not possibly invite them. Please at least add a radio button that says "Hide deceased persons".
We do actually remove deceased members from the invite more family list.
Can you please check that that specific individual is actually marked as deceased in the tree.
If so, and you are still seeing this person on the invite list, then please let me know who in your tree this is happening for, and I will look into it further.