I don't mind Paris, but it's the wrong focus for my pano. I have geolocated the two images to 62.36N 5.83E. I have even checked the XML <scene name="pano17" latitude="62.3674" longitude="5.83631" heading="16.7999999999998"
Problem solved. I'm not sure how to name the problem: bug or user error.
What I did was to geolocalise a flat pano in addition to the main pano, a sphere. It was straightforward to do so, no warnings. When I zeroed latitude and longitude for this flat pano, like in the image below, the problem disappeared !
The fact that this affected not the flat pano but the sphere makes me conclude: it's a bug. It should not be possible to geolocalise a flat pano when this results in the whole tour to end in Paris.