When save or cancel buttons are conditionally rendered and then not rendered (due to a user action), if the user then updates a row of the model that the button is saving or cancelling, it causes this Javascript error ‘Uncaught Error: cannot call methods on button prior to initialization; attempted to call method ‘enable’’. This error occurs even if the button is rendered again.

I presume it is because it is trying to enable the save or cancel button (since the row is being updated) but the button is no longer rendered.