Oh, I forgot about those failed casts, the ones that fail before they start (heh, that's what happens when you turned off those error messages years ago
![Big Grin](//cdn-wow.mmoui.com/images/style_mmoi_wowi2/smilies/biggrin.gif)
).
So, in this case, either UNIT_SPELLCAST_FAILED_QUIET or UNIT_SPELLCAST_FAILED could be fired on those "failed"
Consecrated Flame, hence making the timer reset without advancing the castsequence entry.