EventKit problems with custom timezone

EKEventEditViewController's datepicker displays incorrect time (with incorrect offset) if I set custom timezone for the app:

[NSTimeZone setDefaultTimeZone:someOtherTimezone] 
开发者_高级运维

Is this EventKit bug?

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I believe it will always show the date in the user's local time zone (the one the user picked in the Settings app). This is because the event will be added the the user's calendar, and Apple wants to show it "correctly"