This is indeed correct, Hopefully it has also already been addressed, so the next version you shouldn't see it
If you avoid holding items that are not the requested sword and parts, It will not occur, If you're holding anything that has a blade, guard, and grip, that isn't their order, they will spawn
again, hopefully already addressed
You can also for the most part completely avoid them by dismissing the sword specific customers immediately (This applies for shield customers as well, for a different reason, as they are currently the primary cause of multiplying customers)