Recently, I was testing my game, when I noticed the turn immediately after using a Dual Tech skill, the Attack (or replacement of it) does not work properly until after I select another skill (I do not have to use it, just have to select the skill and then cancel during the targetting phase). If I do not perform this additional step, once I select any Attack skill, all actors used to perform Dualtechs in the last round (even if they were a different Dualtech) will show the Attack icon, and I end up having the last selected person only performing an Attack.

I am not sure if this existed before the 3.13 fix, but I am using DTB with Yanfly's Battle Status Window plugin.