In my experience, the “oh it fails randomly sometimes” bugs are often in some random dull legacy infrastructure component where there is zero attention or celeb

In my experience, the “oh it fails randomly sometimes” bugs are often in some random dull legacy infrastructure component where there is zero attention or celebration for fixing them, and so engineers tend to tolerate losing a bit of time once a week due to them for years rather than someone spending half a day to fix it for everyone.