I realized that Pixellate requires an additional parameter (why it doesn't default is anyone's guess). The lack of an error message (which appears when using Pixellate elsewhere without the step parameter) is a bug in itself, I guess.
I realized that Pixellate requires an additional parameter (why it doesn't default is anyone's guess). The lack of an error message (which appears when using Pixellate elsewhere without the step parameter) is a bug in itself, I guess.