I was hoping the patch would fix the Mining Pick Flag, but no such luck I tried mailing it between various characters to see whether that would trigger it, but it appears its still bugged. I ticketed it, but all I got was 'our developers are aware of the issue and working on a fix', or something along those lines. Did get the Sprite Cloth Chest, bumping me up to 16!
EDIT: Holy Relics, Batman! Just found 4 in a row! Thats my achiev done :>