Not even just that. Often we engineers know about the issues, but they are so rare the PMs aren't willing to let us work on them. PMs get bonuses for shipping f

Not even just that. Often we engineers know about the issues, but they are so rare the PMs aren't willing to let us work on them. PMs get bonuses for shipping features, not letting their engineers do KLO work and keep all the rare edge cases functioning. My team once had a bug on a client app that caused the phone to vibrate randomly, and the PM still wanted us to spend a week to rewrite an Android demo to iOS so he could look better for a presentation to the CEO next week instead of fix it. Sometimes the release team will put their foot down on a really bad error rate and force a team to fix it or not get into the next release. You pretty much need hundreds of crashes an hour for that, though. One guy paranoid about people trying to login with his phone number and flipping a weird option would just get set to priority normal, backlog status in the issue tracker and never looked at.