Cannot clear and save empty signature field

Since the underlying data is an image field I think what is happening here is that the "Remove" is not triggered when clearing the canvas.

Not sure if that would be a viable solution or the button for removing the image should be exposed as some way of starting a fresh canvas deleting the previous image. Saving at this "clean" state will delete the image.

Let's discuss what should be the correct behavior

I think that clearing the canvas and saving the content should remove any existing signature image files attached. I cannot figure out any use case where saving an "empty" canvas (signature image) would make sense.