Xamarin Studio 4.0.12 (build 3) Mac OSX 10.8.4
Xamarin Studio is forgetting my Code Formatting policies. For example, if I go to "Xamarin Studio->Preferences->Source Code->Code Formatting->Text File" and change "Tab width" from 4 to 5, then close and re-open Xamarain, then "Tab width" will have been reset to 4. This bug seems to effect anything in the Code Formatting section of preferences, though other preferences seem to work fine.