Multistrike and Lightning Strike while Dual Wielding

So I've been working on a Mjolner-wielding Inquisitor and I ran into a strange set of interactions between Multistrike, Lightning Strike, and dual wielding. Multistrike repeats the supported attack skill two additional times with more attack speed. When dual wielding, Lightning Strike alternates between the equipped weapons. The interaction is this: while dual wielding, a Multistrike-supported Lightning Strike attacks three times with one weapon, then on the next skill use strikes three times with the other, instead of alternating on every hit. Additionally, if any time passes between skill uses, the attack prioritizes your first weapon slot and sometimes never using the off-hand to attack at all. Since I care very much about which weapon is hitting, this is more than a little frustrating. My question, then: is this intended behavior, or some kind of bug?

looks like the intended behavior to me, but it would be nice to have Mark_GGG confirm

if he doesn't swoop in and answer in this thread, you may consider reposting it in the Mechanics Questions Thread stickied in this forum

Its probably less intended and just the way the code works. I'm working from deduction but I bet Multistrike is coded to repeat the last attack. If you are standing there swinging at something each alternating swing is a separate attack command.

So its taking attack command one and performing the mainhand swing 3 times. Then taking attack command two and performing the offhand swing 3 times.

The reason its going back to your mainhand after not attacking again for a while is obvious. You are returning to a neutral state after whatever internal timer they set for it.