Double-Click Zoom Fit
As a usability change, the user can now left-mouse-button double-click in an empty space in both the 3D and 2D workspace to Zoom Fit the entire model/drawing.
The user can still use workspace toolbar or the right-mouse-button click to use the context menu to select zoom fit however if one uses zoom fit frequently, the LMB double-click is far more convenient and quick.