Guild Wars 2

I have a “Monthly Masterwork Crafter” achievement appearing on my “Summary” page, however, this achievement is not listed in the actually “Monthly Achievements” page.
I attempted to complete the achievement but creating 3 Malign Bronze Mace(s) (Masterwork) neither progressed the achievement nor awarded me the achievement points. Clearly something is a tad buggy here. Hopefully this can shed some light on this situation.
See attached images below for details.

How odd. I didn’t even know there was such an achievement in the August Monthlies.

I do not think this achievement exist, I crated many greens this month and never saw this pop up.

That achievement seems to be for a previous month, which is why you have progress on it but can’t continue it and it doesn’t show in this month’s monthly achievements. It shouldn’t be showing up in your Nearly Completed column though, that’s definitely a bug.