Up until now, when a function would have returned an unusable value such as 0, null or infinity, it produced an error instead. However, this behavior frequently caused errors to be triggered in situations where they interfered with the intended functionality of a function.

This is why, as of this update, functions will only produce an error message upon trying to output an unusable value if the new Strict Mode is enabled for them. Strict Mode can be enabled for individual functions via a new toggle available in their detail view.