I have an account that was never affected by the GWAMM bug, because I never created a new character while that was all happening, and I never earned enough points in GW1 beyond ‘traveler’ level.
After the 7/28 patch, for every new character I create, I get the email regarding the ‘GWAMM bug’ and 50 achievement points are subtracted because the ‘traveler’ achievement is disabled. None of my existing characters are affected. When I logout and login on any newly created character the ‘traveler’ achievement and its corresponding achievement points are restored.