[Fern]

Having ambidexterity on lets you perform certain skills with the wrong weapon. (See: Sidecut and Power Gradation with a gun.)

[Sarinpa1]

Shinken did not seem to care for using the proper weapon type either.

[Neus]

Are you sure it's ambidexterity's fault and not something like DH's Martial Lawbreaker?

[Fern]

Yes, I'm sure. Because I wasn't using DH. Also this has been around since before DH was a thing.

[Neus]

This was an interesting bug and it might affect other skills that perform basic attacks with a specific weapon type. I'll have to correct those manually, when I'm made aware of them, but at any rate, it's fixed for the Duelist skills that basic attack, as well as Shinken.

[Ranylyn]

I was under the impression this was fixed ages ago, myself. Dev, do you have any idea what may have changed it back? Just to make it easier for us to keep an eye out for it/ test if we encounter it. I mean. I apologize for posring in a "solved" bug report, but I do believe this is a relevant question.