Minis not wiped at each phase transition at Heroic Siege Innkeeper

Since the start of Siege of Stormwind this week, at first i didn’t notice the bug that my and my partner’s minis are not wiped at each phase transition for Heroic Siege Innkeeper. Then when i replayed it a few time, i started to notice it. So i just let it be for now hopping that the Blizzard Rumble Team notice this bug by themselves. Then when i played it again, the bug is still there. So i’m reporting this bug to the Blizzard Rumble Team hopping that the bug could be resolved as soon as possible.

P.S.: i notice that this bug doesn’t occur when the Youtuber Old Guardian and some of my guildmates play this siege