Does the bug where if you enter a Sal'diresh instance as a team and loot the chest you get no loot at all still exist?
No, we did some Vault 01...03 in July, all in 2-person team, and all were fine. On a related note, loots containing stuff with 0.001 PEC unit TT also seem to be splitting fine now - been culling dire weeds on Cyrene and it's working fine under 'Damage: Share Loot' rules.
Yup May and I tested this not long ago gathering info for her Sal'diresh's Vault - Mob & Loot tables thread and we couldn't reproduce it. I think the post is this one with the options we tried.