It's All Downhill From Here - S2-E16
Continuity mistake: While Ralph is invisible in order to eavesdrop on Klein, when Klein makes a crack about Bill being little league, Ralph deliberately knocks the cup in Klein's hand so the coffee spills on his shirt, tie, vest, and jacket in the closeup, but in the next shot Klein is spotless. Additionally, Klein has a black pocket square and the cup he holds is white styrofoam, but in the closeup the pocket square is gone and he holds a white mug. (00:27:50)
It's All Downhill From Here - S2-E16
Revealing mistake: While Ralph is invisible and eavesdropping on Klein's conversation, when Ralph picks up a pencil and taps it on the desk, we can see the stiff wire attached to the pencil moving up and down, at the left side of the screen. (00:27:35)
It's All Downhill From Here - S2-E16
Continuity mistake: When the shooter is driving the snowplow and also later when Yuri defects, in some shots the driver's side lower window has "Squaw Valley" printed on it, but in other shots the window is clear. The shape of that lower window also changes. (00:12:00)
It's All Downhill From Here - S2-E16
Continuity mistake: First when Ralph takes off after the shooter and the snowplow, and also later when Yuri defects, Ralph's red snow boots disappear and reappear. (00:11:35)