To make matters worse, in this bug Google seems to be blaming the users for misconfiguring their phones or Google Calendar timezones.
This issue seems more insidious than simply a correctable "view" when you change the timezone settings. Today I found that all of my one-time appointments had shifted one hour earlier, while weekly repeating appointments kept the correct time. It seems the stored time itself was changed within Google Calendar's server-side for only a portion of appointments, so changing your view will not correct this error. I may need to go through all of my appointments of the next year and manually decide if times need correction. =(