Ma McCroc not spawning in McCroc Homestead?

[Whirlzap]

I ran it a few times on my level 30 with Flawless's 30 mage.

Apparently the two-minibosses still spawn but no sign of Ma McCroc.

[Airity]

Were you sure to clear all mobs? I believe they made a patch where you must kill X amount of mobs until the boss spawns.