I had a new dev that was tasked with changing the colors of a button. took them 3 days to do it.
when I finally got the PR there were over 300 files changed and over 100k changes.
they "fixed" the while space. I asked them who asked them to do that. "Nobody, it's just maintenance on the codebase."
I then had an hour long call with them reviewing everywhere they "fixed" the whitespace and got through 10% of it. I asked them if they wanted to have another call tomorrow to review the rest or if they wanted to put the changes forward they were tasked with.