[Trinket] Oozing Coagulum , the trinket's effect is not working

[fuqqara54]

WoW Freakz item link: [Trinket] Oozing Coagulum
Character name:Eticin
Bug description: The trinket's effect is not working
Proof: effect pool is appearing near me, but healing is same as outside the pool when i stay inside the pool. i tried many ways like relog, re-equip, go outside pool and then go inside pool, aoe healing - over healing - one target healing.. but still there is no effect on any healing and the pool is keeping staying on the ground, i mean it must be dissapear when used all the healing it keeps , but its still there cause its not working. one GM must check it and fix it ,cmon its a raid trinket how it cannot work ,its why i send a ticket ingame and the costumer said me open a ticket on forum about it