A somewhat awkward work-around is to use the CV Demo instead. Most browsers have a screenshot tool (or if not, an add-on) that allows saving a region of a web-page to disk. These tools often automatically pre-select any images on the page, and you can crop the area containing the subject, which often greatly improves the CV results. I keep the CV Demo open in a pinned tab, and have a button for the screenshot tool on the main toolbar. (NB: refreshing the demo page restores its “Choose Photo” button). It’s not exactly user-friendly, but better than nothing…
There are several legitimate reasons for using the CV whilst identifying. Probably the most common one for me is using it as search tool when I know exactly what something is, but cannot remember its name. I also occasionally use it for sanity-checking when I’m only 90% certain of my own ID. And of course, sometimes I’m just curious to know what the CV makes of some photos.