Previous to 4.0.6 we've noticed that in 10-man normal Magmaw during the period when he is impaled Pillar of Flames would not occur and the Lava Parasites would not spawn. This allowed the DPS to focus on his point of vulnerability and the healers to get back their mana.
Since 4.0.6, we've noticed that during his impaled period, Pillar of Flame would spawn and Lava Parasites would appear. We thought this was just a one-off, but each pull had this same behavior.
Has anyone else noticed this happening in their Magmaw encounter?