I do not desire for OTF fonts to be associated with FC.
I could not see a preference to turn this off. When I go to add fonts to my font manager, I do not desire they appear like projects.
Further, I want to be able to double-click on a font and have Windows’ handle the preview.
No, since time began, TTF and OTF files have been associated with the Windows font viewer application here. When I did the update, OTF files were assigned to be associated with FC as shown in the screen shot. I did nothing to make that choice.
TTF files behaved in a standard Windows manner. That is, after the FC update and I double-clicked on a TTF file, Windows recognized there was a new application that could be set to use. Windows font viewer was listed as the default in the dialog that popped up but I could have at that time chosen FC.
Like I said, the OTF files were simply associated with FC.
I am using Windows 10 64-bit, but likely that is not the issue. At the end of the day, reassociating them with Windows font viewer reset it as the default application. It did cause me to double check what types of files I was adding to my font manager, though.
No worries. It did catch me off guard and I initially thought I had moved some font projects unwittingly into the font folder for my font manager. I have accidentally done that before…