Silently ignoring errors that are require user interaction and serving the user something that is a valid response to a different action is terrible for ux. Sa

Silently ignoring errors that are require user interaction and serving the user something that is a valid response to a different action is terrible for ux. Say I take too long entering a comment, I get distracted at work, then hit submit. I'm taken to the homepage. Did the comment go though nor not? How an I supposed to know what the hell happened?