I hear it all the time.
We’re having self-editing issues. For some reason, my children believe they are perfect writers! They can never find any spelling or grammar mistakes.
Surprise, surprise! Most children simply don’t get the whole editing thing. They like what they wrote and can’t understand why you want them to—gasp!—look for ways to improve it.
Listen or read more at https://writeshop.com/why-self-editing-is-hard-make-it-easier/