Is it just me, or has anyone else noticed that Xcode sometimes (frequently, always?) does not save changes in text based settings in Interface Builder unless you press Return or tab out of the field? It also (reasonably, given that behavior) does not mark the .xib file as having been changed, hence does not save it when you build. It does seem to notice if you close the project, or possibly other circumstances, but not if you change some text, then go immediately to a build or run. This just burned me for about half an hour of troubleshooting. That seems mildly annoying.
Or, it is entirely possible that I am just on the keyboard too late… 