It probably started with a // TODO add file path system. Then they just got to building and it just never got on the update finished list, and many developers

It probably started with a // TODO add file path system. Then they just got to building and it just never got on the update finished list, and many developers started using it internally. Now it is hard to do, or there are so many devs noone thinks it is their job as it isn't completing their milestones for ship. These situations probably got thicker when they were purchased by Facebook. Could have taken 1-2 days in early development max or even 5 minutes at the start, but now it is layers thick. This can happen to many systems either from external libraries, quick prototyping without cleanup or other reasons that just stick around. Then some unluckly schlup gets stuck with the 'Pathing Issue' that turns into a 3 month ordeal, everyone feels sorry for the coder and his life is ruined for months. It could also be those situations where everything was done in '5 minutes' but ends up sapping 3 months of dev time fixing. This happens often in game development, 'Hey dude I whipped up an AI system in five minutes' and then it works but doesn't work, then ends up being the source of bugs for most of the project. Watch out for the '5 minutes' architecture. Hopefully this isn't a sign of quality across the project.