But I should have checked with the Marathoner tool…
Thanks for validating

Yes, I do. In this case the only modes used were Draw buildings (B) and Extrude (X), so the 'non-squaredness' is a bit strange.
By the way: As I mentioned at your previous comment to another task: When you communicate in this way with changeset comments, please mention the relevant taskID. Alternatively, use Task comments.

Hmmm - yes, that's more or less what I did...
But thanks :)

Hello Frans S, thanks for your validations and for writing comments. I really appreciate it. I am aware of the principle of moving the outline of the roof area to the footprint of a tall building, as shown in the video. At least for nice, boxy buildings (although I can see from your corrections that I have overlooked some here). However, I am unsure how to handle some of the more complex buildings, where the lower parts may be hidden behind the higher parts of the building. Hence the addition of a Fixme tag. Any advice regarding the mapping principle in these cases would be very welcome.
By the way, referring to the changeset in your comment is very useful. If possible, including the task id would be a great help to get back to the imagery.
I’m not used to communicate in this way, but I hope that you will be made aware of my comment here