Save Synfig 1.0rc3 canvas to disk?

In Synfig 0.64.3 it was easily possible to export a canvas and save that canvas to disk. With Synfig 1.0rc3, I can still export a canvas but I see no way to save that canvas to disk. Any attempt at doing so, using the main File menu or the menu by right clicking in the main window after selecting the canvas from the canvas browser panel, simply saves the entire project, which I’ve verified by shutting everything down, then loading what I thought was my saved canvas only to find out it was my entire project instead.

So, how do I save the canvas to disk with Synfig 1.0rc3?

i din’t test the issue , but if you are sure you can submit an entry to the tracker