Postan to keep this thread alive:

https://youtube.com/watch?v=PpsWirQt6AM
Regular Show's 2nd halloween special had its original ending re-done because S&P thought it was too dark. Later halloween episodes also made it so that even the stories within the episodes couldn't end on a bad note, they all had to make it out alive.

In general CN has gotten way over-protective since the 2000s and early 2010's, that ben 10 reboot couldn't even show Ben's grandpa drinking coffee and they changed stinkfly because kids in focus groups thought his original design was too scary.