At the moment, "Open In File Manager" applies to Albums only as far as I can tell. It would be very convenient to have the same for individual images. i.e. Right click on thumbnail -> "Open In File Manager" which then open the image's location as per File Properties -> Folder. Even better if the File Manager can be made to focus on the image in question. Thanks.
*** This bug has been marked as a duplicate of bug 360475 ***
Fixed with bug #360475