Is it a worldwide phenomenon found in many languages?
I give an example here.
I have heard several times in spoken Chinese that people say [t͡ʃaʊ̯˥˩] with the meaning "gotten/found". This is a nonsense word and has no other cause for emergence besides a mix of [taʊ̯˥˩] and [t͡ʃaʊ̯˧˥], both with the meaning "gotten/found" and they are freely interchangeable in this context. It seems the new formed expression gets the tone from one and the consonant from the other.