When choosing another language like "German" in View mode the context menu is translated to german as well, the edit interface and context menu in edit mode is using the standard language, for example swedish.
This happens if an editor does not change the "Personal language" under My Settings - Display Options, which is default.
Expected behaviour: The context menu in view mode uses the same language as the context menu and edit interface in edit mode.
The problem is that Thread.CurrentThread.CurrentUICulture.IetfLanguageTag returns "sv" in edit mode and "de" in view mode. Translate() which is used by RightClickMenuItem constructor uses IetfLanguageTag.
For now editors will need to choose a language in "Personal language" but it would be nice if this could be investigated.