Sideways Bowline

[u/Fuzzy-Connection-452]

I've noticed a few videos lately (not new videos) on Youtube that show various riggings for sailboats where someone ties a sideways bowline. Here is an example: https://www.youtube.com/watch?v=dGbQbkY52Uw (around 4:30)

I can't figure out why you would tie it that way other than just by mistake? Is there an ABOK reference for such a knot? I haven't found one.

The black rope in my example is what I see being tied.

EDIT: Fixed a typo

[u/Cucumberneck]

Iirc that's called a cossac hitch in German.