I'm having an issue with the Edge Flange command. Regardless of the flange position, bend allowance, k factor, corner relief, or any other setting I can think of Solidworks is trying to calculate an edge flange on a unselected edge.

If I pick one edge, it works just fine!

If I try and pick the mirror edge, Solidworks tries to calculate the edge flange off an unselected edge.

Now I've got plenty of work arounds. I can change the base flange. I can add a second edge flange and it works fine. I can model it as a solid and convert to sheet metal. I'm just wondering if anyone else has seen this before and if you figured out what causes it?