QGIS » QGIS Application

If I double-click a data file, like a shapefile, when QGIS is not running, QGIS starts, the shapefile is added to the default new project, then QGIS tries to create a new empty project, which then causes QGIS to prompt to save the one just created with the shapefile. If I save or don't save it, a new empty project is created, without the shapefile. If I cancel, it does not create a new empty project, leaving the shapefile in the first new project. This is a regression, I think this has happened in the past, possibly Mac-specific, like something got out of sequence in the startup process when changes were made to the startup.

What should happen is that the shapefile or other data file starts QGIS and is added to a new project document. That's it, no attempt to then create another new empty project.