I selected a range of assets in the timeline to modify the location. I pasted coordinates from google maps. This location was then applied to these assets (that were all in a single day) and all files going back over 4 years!
I have all external libraries as the location was applied to the xmp sidecar files. I can see this location in all these files. The JPG,RAW, video file was not touched.
I'm now using a script to find and remove all these wrong locations and then I'll need to re-geocode. Very annoying bug!
All have exactly the same wrong coordinates, except the handful that were originally selected.
version 1.141.1 all round on Mac with external NAS. I was careful to only select a range of photos to apply the location to in the web UI. I think this could be a major bug.