Fwiw, you might have misinterpreted the idiomatic expression "all the time" as meaning "100% of the time". It just means "often" or "commonly". The parent is just saying they often find bugs, they know they're bugs through experience.

Of course anyone can make a mistake. Maybe you prefer the 'discussions' route because it's only seemingly then possible for a projects own devs to make a mistake in creating an issue.