Crop and expand without Regenerate

When expanding the canvas Photoshop always insists on regenerating content. This is a showstopper e.g. on isolated Images, as you have to wait for the (not needed) result and disable/delete the layer after finishing. Clicking "Cancel" while regenrating cancels the whole crop&expand process.

I think it would be more userfriendly if regenerate is only used when activley asked for.