Shizgher and Humon'gozz in Ardenweald bugged

[Syllvanna]

Character name: Draxana
Bug description: So I wanted to obtain 2 mounts in Ardenweald, one is called Shimmermist Runner and one Arboreal Gulper. Both are obtained by killing elite, so I put it in one topic.
1 . Shimmermist should be obtained by completing labirynth in a good way, what I did and then when I went to end of labirynth there is a npc called Shizger and he should be killed to obtain mount but he's imunne and I can't do anything here.
Proof : https://imgur.com/lImLHXS
2. Arboreal Gulper should be obtained by dropping Unusually Large Mushroom then it should be planting in one area to grow as "Rapidly growing mushroom" and then after 1 min it should change to elite called "Humon'gozz" who drop mount, but Rapidly growing mushroom can't grow, I was waiting like 5-7 min and nothing happend.
Proof: https://imgur.com/4J2fJ0C

[Koler]

Hello, I have checked our Trello board and both of the issues mentioned above are already reported. Thank you for the report!