Missing flavour bubbles

I've recently switched to B&H Platinum switch, after I was introduced to it by a friend and found that it was a lot better tasting that my previous brand, however on quite a few occasions there would be at least one cigarette in the box without the the flavour bubble, at first I wrote it off, but it is becoming more and more frequent.

This is a bit concerning, would really appreciate if you could see to this, it completely ruins the taste of the cigarette, to the point where I actually just throw it away