I never scrolled up

I use a coding agent every day. I give it a task, go do something else, and come back to a line at the bottom of the screen like this one:

"빌드·회귀 스모크·기존 분석 테스트 모두 통과."

(build, regression smoke, and the existing analysis tests all pass)

That is a real line from my own session log. I never checked it. Instead of scrolling up to see whether the tests actually ran, I gave it the next task. I did that for months.