In “the nose” by nickolai gogol, what evidence from the text suggest that kovaloff has not learned anything from the experience of losing his nose?

An excerpt from the text that suggests Kovaloff has not learned anything from his experience is: "He returned joyfully, and regarded with a satirical expression two officers who were in the shop, one of whom possessed a nose not much larger than a waistcoat button."

Here the character, a Major who lost his nose, is seen doing the same he did before his experience: joyfully shopping and mocking others, as though nothing happened. His personality is still arrogant and judgemental.

a.) it provides a clue to solve the mystery.

we need to see the examples!