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When a secure WebDAV server returns Bad Gateway (502) in response to a MOVE operation, OmniFocus now retries its request using an http destination URL. This works around a WebDAV implementation bug on some servers (such as BingoDisk) which don't correctly handle https destination URLs.
This change needs to be reverted ASAP, OF is opening users up to stolen passwords, man in the middle attacks, and goodness knows what else. NEVER silently revert an HTTPS connection to HTTP!

Make the WevDAV vendor fix their software instead.