Silver Singularity - Match 4

I’m not really sure if this is a bug or if this is intended. When i was using Silver Surfer’s silver singularity; the ai then made a turn which cascaded in to a match 4 on the same line as silver singularity. This destroyed the entire row along with silver singularity. Reading the description it states ‘Silver Surfer creates a miniature black hole which begins to engulf everything. Transforms a chosen basic tile into a x-turn Black Hole tile which cannot be matched and does not fall.’

My question really, is this supposed to happen?

This is generally believed to be working as intended.

Thanks for the fast response, much appreciated.