Update (Feb 21st): This has been fixed according to a reader. The iTunes and App Stores use HTML on the backend so Apple can “push” updates via backend code changes:

Would be nice for an official answer from Apple, but so far, it’s working correctly! Also, I see redeem and send gift are grayed out also, at the bottom of the App Store. Same for iTunes Store.

While users can no longer change the account in the Settings.app after enabling the “Don’t allow changes” setting, as highlighted in the video above, they can still change accounts directly in the App Store and iTunes apps. For teachers and organizations trying to prevent users from installing unapproved content, the bug is clearly an oversight on Apple’s part.

Apple confirmed to our source that the problem is a bug that needs to be fixed. However, Apple didn’t confirm when a fix for the “Don’t allow changes” bug would arrive. Apple’s temporary solution is to turn off the “Installing Apps” option within Restrictions. Unfortunately, as noted in the video above, that prevents organizations from pushing apps and allowing users to update apps.

A number of other bugs have popped up in recent weeks, including the “Continuous Loop” Exchange bug and a passcode vulnerability both related to iOS 6.1 bugs. Apple confirmed fixes for these issues are in the works, and a 6.1.2 software update is expected as early as next week.