I'm Running PM 6 build 4155 on Windows 10 and am just now encountering a problem with filtering. I don't know if it's me, PM or Windows, but here are the symptoms.
Let's say I tag 4 mages in a contact sheet and then view only tagged images, only the 2nd though 4th are displayed. If I only tag 1 image, then none are displayed. When I go back to "display all", the images are clearly tagged.
There's a similar problem with start ratings and color coding. If I only rate or color code 1, it doesn't show up when filtered. If I've done several, the 1st doesn't display.
With the star ratings, it happens as I change the rating filter - if there are multiple types of ratings (2 1-star, 1 3-star, and 1 5-star, as you click to display only the higher rated images you lose the first of that type. So in the example I just listed, when you get to filter 2 and above you only get one of them. Filter for 3 and above and you only get the 5-star. Filter 4 and above and you get none.
This is recent which is why I'm wondering if Windows or me has done something different or need to do something different.
Thanks.