I have pictures taken with a fairly recent camera where Gwenview truncate the GPS coordinates to the minute: 38deg 24' 0". Other apps display actual seconds with two decimals (exiftool) or three (gimp) so the data is there.
GPS display is OK with other photos from less recent cameras/phones.
Is this a known problem?
“GPS version ID” is 2.3.0.0 for images with the problem, and “2.2.0.0” for images without.
Hi - I can’t reproduce that myself using photos from an iPhone 12, but that I don’t think that qualifies as “fairly recent” anymore 
I also don’t see an existing bug report for Gwenview that clearly matches what you’re seeing - so this might be a case where if you can pin down the circumstances that trigger that behavior, and if others don’t have any fixes identified, it would make a good report in Bugzilla: Get Involved/Issue Reporting - KDE Community Wiki
OK, reported.