Unreachable boss arena included in mirage

Hi GGG,

I'm in the mirage of a tier 7 Courtyard map, and the boss arena is included in the mirage but the entrance isn't, meaning a large chunk of the mirage is inaccessible. I think the djinn/chains are also in the arena, because I can't find them in the area of the mirage I can access. Bug Report ID: #4,006,026,484

Just happened to me as well on a tier 16 palace map. The arena is visible on the map, but not accessible.
Bug Report ID: #2.044.619.049