Crash on resize (with snapping) lib2geom exception

Inkscape crashes with a lib2geom exception:

terminate called after throwing an instance of 'Geom::ContinuityError'
  what(): lib2geom exception: Non-contiguous path (../../src/2geom/path.cpp:1043)

Steps to reproduce:
1. Open file attached to this bug report (dog_bunk_bed_plans.svg)
2. Select the red rectangle, and drag-resize the bottom corner upwards until it snaps to the grey rectangle.

Result: Inkscape UI flickers on/off all objects on canvas, then crashes.

Here's a short screen capture video of what happens, along with the terminal output floating over it:

https://www.dropbox.com/s/9o0dil97z3w0c52/inkscape_crash_on_snap_resize.ogv?dl=0

System: Ubuntu 16.04 (64bit) with gnome-shell 3.18.4
Inkscape ver: Inkscape 0.91+devel r (May 14 2016)