I'm giving a try at your Faces module v2.5.1 on webtrees 2.0, it works really great, I'm so happy you made it!
Despite this, I noticed a few glitches:
1) For private individuals, could you display the text "private", not the xref of the individual (see the attached screenshot)? There might be an exiting function doing this as it is a standard behavior of webtrees.
2) For pictures with a lot of faces, the list of names largely overlaps the picture (see the attached screenshot). Could the list be under the picture, with a vertical scrollbar when needed?
3) The boxes are not displayed if the text contains a comma
4) Could you make the tags to be displayed/added even when zooming? This could be useful for pictures like mine