On a couple of the low level nodes on Door 1 of Strange Sights, when I made the match to down the last goon, the tiles weren't destroyed and there was no cascade. At first I thought it was a QoL feature but I noticed that when downing the first and second goons there was a slight delay to the normal "downed" banner. It happened a few times but then on the higher level nodes it worked as normal.
Ignore me. It was Hit Monkey's Red passive. Interesting effect though!