I'm on an iPhone 4.
The keyboard shortcut bug is really annoying me. Every time I try to create a new one it doesn't seem to save it, and if it does it doesn't end up working. I have to do a hard reset and usually that makes it work, but one time it made it not work again (meaning, my shortcuts were working fine, then I had to do a reset for something else, then the shortcuts stopped working again).
I have restrictions enabled so I can turn off Ping, and for some reason if I go into Restrictions again sometimes Ping disappears altogether, sometimes the screen is messed up (i.e. some options are on top of each other so the screen is garbled), sometimes Ping shows back up but nothing else. It seems to occur randomly, and usually the Settings app just ends up crashing whenever this happens.
I don't know if this is a bug or a feature of iOS6, but when I'm on a phone call that lasts longer than what I have my auto-lock to set to, it actually DOES lock (sometimes). So now I have to slide to access the button to end the call. In iOS5 I never had to slide--just tapping the phone during the call would "wake it up" and show my phone options. It's an annoying extra step that I'm not used to. This is when it actually works, because sometimes my phone doesn't end up auto-locking when I'm on a call. For instance, my auto-lock is set to 5 minutes. It was still not locked when the call was nearing 10 minutes, then decided to lock then.
Album art does not like to show up in Cover Flow. This doesn't really bother me as I'm always in portrait mode, but even when all my album art is showing in the albums list, when I turn to Cover Flow there are some that are missing. Playing a song from one of these albums, then flipping the phone to portrait makes the art come back...but when I flip it back to landscape it disappears! I tried deleting and readding and redoing the artwork with no luck.
For a while every time I did a hard reset on my phone my apps would be all over the place so I had to rearrange them.