Actually, the bug Skids is talking about is a bit worse. If you edit metadata on the JPEG half of a RAW-JPEG pair, you end up with no edited metadata on the JPEG and the edits intended for the JPEG applied to the RAW. (The latter might or might not be a bad thing, but still.)
So, until the bug is fixed, don't try to edit metadata on RAW-JPEG pairs in NeoFinder.
We all have Photo Mechanic at our fingertips, so we don't have to use NeoFinder for this at all. Photo Mechanic is a bunch more powerful and I'm fairly sure I know how to use it, so there's a decent argument for just using PM for all metadata editing from the word go.
That said, I'm enjoying NeoFinder in day to day use. It's fast and streamlined. In the month or so that I've been using it, I've had to do the fancy kind of searching that I made those workarounds about maybe once. Or twice. And I got the job done.
To put the bug thing in perspective. There was a time when a fair part of earning my living involved finding bugs. I'm pretty decent at it. The fact that I found some (three, one puts data at risk) in this product (plus the ugly one that Simon found.) is cause for appropriate concern, but I wouldn't think is cause for panic. I could probably find that many bugs in Photoshop or any of the big, fancy, supposedly highly polished software, in a day.
But Photo Mechanic doesn't have bugs like that!? I've said before and I'll say again that Photo Mechanic may well be the cleanest software I've ever used. I'm not entirely sure that I've ever reported a legit bug in the 25+ years that I've used it. So I think it wouldn't be a fair comparison to hold impose Photo Mechanic as a minimum standard for code from other small developers. You may have noticed that Photo Mechanic costs more than other products in its segment and NeoFinder is an absolute screaming deal. That's is no doubt related.
-Carl