Continuity mistake: When Kermit is in the park looking at his plaque he wipes off all the snow and reads it. In the next shot of him walking to a nearby bench the plaque is covered again but it is not snowing heavily enough to have been covered so fast.
Continuity mistake: When Mrs. Bitterman is showing Pepe Club Dot, her eyes go from being open to closed before she shoves Pepe's head into the model.