Kudos also to the original author for not doing premature optimization, of course. It wasn't until the iPad that it was needed. However, a TODO might have been useful. ;)
Only for users that didn't use both features at the same time. Users who did probably experienced the same bug, but it took until a critical mass of users reported the bug to get it fixed. At which point the fix probably took four times longer than necessary because the developer was unfamiliar with the design and the toolchain had decayed.
