Larian Studios Forums Baldur's Gate III Baldur's Gate III - Suggestions & Feedback Failed passive checks should not be shown, and shouldn't be rolls in the first place.

It's not an oversight. it works this way by design.
Because it's a GAME, so if you don't make the player at least tangentially aware that they are missing out on something, you'll have hordes of people stuck and raging sometime later "HOW WAS I SUPPOSED TO KNOW THAT I MISSED SOMETHING IN THAT AREA?"

Anyway, yes, it's a mod and one of the fastest ones that we got after the release.