Board Thread:Plants vs. Zombies 2/@comment-26497652-20160225030745

Thankfully I was only on level 5 when this happened but two cone head zombies have become unkillable in the endless zone. I was using blooming heart and maybe the bug is linked to using her as the hearts around the cone heads never disappear. Anyone know a trick I can kill the zombies with? Or has anyone heard of this bug before? 