Question - Has anyone had loot dissappear when looting

[Redemption44]

Seems that when i get the raid leader to pop and he has the bella's charming diamond and i give it to my main it dissappears, checking other toons etc. poof it's gone. This is second time the forgotten raid leader has stiffed me.

 

[Redemption44]

Finally got the charming diamond this time around glad it didnt go poof like last time, 3rd time's the charm in a literal sense with this item.