When a senior engineer who was essentially a DBA on his last project is made tech lead on an iOS team. He had no iOS background before this and now he thinks hes a friggin architect.

So 3 devs spent all of yesterday investigating a bug. Tracked it down to field validation handled by a 3rd party product. We decide the easiest fix is to remove that validation and implement it ourselves (its a really odd bug and a terrible product). Then today the tech lead comes along and says "there could be another way, hang on while i download the latest Xcode and waste half the day fighting with it when you could be fixing it". I dunno why we bother doing the work in the first place. Clearly we should just leave it to him to save the day.