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#11
It opens the folder containing the file, and because it's a real folder (not a Library folder) then all the files types are named correctly. The wrong name only shows in Libraries, not in folders or anywhere else in Windows.
It's a similar issue with icons. For some file types the Library will use the correct icon associated with that file type. Other file types will get ugly square outlines instead on an icon, and some just get a blank icon. Again, if you leave the Library and look in Explorer, all icons display correctly all the time.
The changes are not constant, the 'wrongness' remains quite static until there is a system change involving file associations (for example you install a program and you change a file type to be associated with that new program). This kind of change will result in one of the breakages described above. but even uninstalling or doing a a system restore will not get the Library back to how it was pre-install. That error becomes 'baked in' to the Library for good. Nothing you can do will clear it an cause the Library to be refreshed or recreated.
That's what happens for the extensions that do actually show up in the Library. For those that don't, you still see the 3 icons stacked in a layer (representing the fact that there are multiple files of that particular file type in the Library) but when you open that particular collection it's appears empty. However, if you then go to the corresponding 'real' folder location, you will see that it's not empty at all. The file types in question ARE there, and it's just the Library that's showing the group icon for them, but not actually listing any of the files themselves.
This 'empty folder syndrome', 'Wong / missing icon', and 'incorrect file type display name' can sometimes be fixed with drastic action taken on the OS, but it's completely hit and miss as to what will work, and the issue is compounded by the fact that once a folder has 'gone wrong in some way' (i.e. any of the 3 issues above) then there is nothing that you can do to force it to refresh, repair, or revert, because the current state gets cached in some invisible location with no registry references not anything to do with the search index (yes, I have nuked that entire folder and all subfolders, and nothing changed).
Here is an example of one of my real Libraries (instead of my Desktop test) from my video editing Projects folder. See screenshot. This was about the best that I have been able to get it.
One set of icons was missing (despite them displaying fine in Explorer), 5 file type categories showing empty Library folders when opened (BMP, PNG, FLAC, PSD and WAV) again, these all displayed fine when opening the destination Explorer folder, and 7 misnamed file type categories that do not reflect the name shown throughout the rest of Explorer.
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