The HN system does indeed shorten titles automatically, e.g. removing initial "How". I wish HN would stop doing this; it makes many legitimate titles nonsensical, and incidentally can remove a signal that a link originally had a clickbait-style title.

The submitter can click "Edit" to restore their original title after the autoshortener has changed it; but there is no way to tell HN "Please use exactly this title in the first place."

(I remember this submission of mine being affected by the autoshortener, for example: https://news.ycombinator.com/item?id=40114482 "How thumb indexes are cut" autoshortened to "Thumb indexes are cut".)