This has happened a couple times now, most recently on level 1996. I get a double color bomb, switch it... and it destroys everything on the board except blockers. On level 1996, it ignores the marmalade-blocked ingredients on either corner.
This had previously happened in level 1993, and ignored the licorice-blocked ingredients.
It's really difficult to get this combo - especially on the current level (1996), and VERY frustrating to get it only for it not to behave as expected. 