This also looks relevant, though only appears in one crash report:
gnome-shell[10846]: JS ERROR: GLib.Error cogl-framebuffer-error-quark: Failed to create an OpenGL framebuffer object _prepareAnimationInfo@resource:///org/gnome/shell/ui/windowManager.js:1285:34 _sizeChangeWindow@resource:///org/gnome/shell/ui/windowManager.js:1277:18
This also looks relevant, though only appears in one crash report:
gnome-shell[10846]: JS ERROR: GLib.Error cogl-framebuffe r-error- quark: Failed to create an OpenGL framebuffer object onInfo@ resource: ///org/ gnome/shell/ ui/windowManage r.js:1285: 34 ow@resource: ///org/ gnome/shell/ ui/windowManage r.js:1277: 18
_prepareAnimati
_sizeChangeWind