Why is every building shifted from mapwarper to OSM data?

Hi,

I’m trying to use a drone photo to update buildings in my local neighborhood, but after rectifying the drone photo on mapwarper.com, I get this kind of shifted references everywhere on JOSM.

Does someone know where this shift could come from?
I suppose it might be something related to the drone lens, or my workflow on mapwarper.

Thanks and have a nice day,

Alex

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Maybe reading wiki helps
https://wiki.openstreetmap.org/wiki/Using_aerial_imagery
Section “Matching imagery using different editors”

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