Raising Importance to 'Critical' due to loss of data (no emergency save).
AFAIU this needs fixing in how gdk-pixbuf in the 64bit devlibs is configured and compiled (not a change in Inkscape's own code). Builds using the current 32bit devlibs are not affected because there the gdk-pixbuf loaders are compiled in.
Raising Importance to 'Critical' due to loss of data (no emergency save).
AFAIU this needs fixing in how gdk-pixbuf in the 64bit devlibs is configured and compiled (not a change in Inkscape's own code). Builds using the current 32bit devlibs are not affected because there the gdk-pixbuf loaders are compiled in.