Another Cookie Chain bug.
Activating the Golden Switch with a Cookie Chain Golden Cookie already spawned on the screen, but not yet clicked, breaks the Cookie Chain after you click it. Ok... that was confusing, so here's the play-by-play:
Ruin/Golden Cookie starts to appear on the screen as I click the Golden Switch. Once I click the Golden Switch is ON, I then click the Golden Cookie. Turns out the Golden Cookie starts a Cookie Chain, but it never spawns the next Golden Cookie in the chain.
Assume it's because the Golden Switch prevents Golden Cookies from spawning, which are required to spawn for the Cookie Chain to finish?