Travelers, have you noticed that your iPhone 6S or iPhone 6S Plus' battery percentage sometimes doesn't update when you change time zones, or when you change the time on the device manually?
Well, in a notice on its Support page, Apple has noticed the bug as well, and is offering a temporary fix until it has a permanent solution.
Currently, your best bet is to restart your iPhone, and then go to Settings - General - Date & Time and turn on "Set Automatically." Apple admits this might not fix the issue permanently, and suggests you should contact Apple Support if your battery percentage gets stuck again.
The interesting thing about this bug is that it's been around at least since September, when a user complained about it on Apple's Support forum. In its notice, Apple did not offer a time frame for the fix, merely saying it's "investigating the cause and a solution."