Gathered 100 times now and each coral gives only 1 Coral Piece. It used to be 1-3 pieces per gathering (OK, a while ago, not just yesterday). I didn't see anything about this in patchnotes, so I assume it is a bug? On a sidenote: Gathered a number of Giant Clams and didn't get any yellow tradegood drop. Also bugged? More important is the coral gathering, though, as the Frigate's Coral Ingots would need something like 60-80 (?!?) hours of underwater gathering if this isn't fixed.