GNOME Bugzilla – Bug 789431
ship app icon
Last modified: 2017-11-01 13:30:43 UTC
Even core apps should ship their own app icon.
Created attachment 362214 [details] [review] icons: ship app icon with Calculator - to move to the great new Flatpak future, Apps should rely on shiping their own app icons, their identity. For more context, see https://wiki.gnome.org/action/edit/Design/Whiteboards/CoreAppPresentation
Thanks for the patch, pushed the fix to master.
This problem has been fixed in the unstable development version. The fix will be available in the next major software release. You may need to upgrade your Linux distribution to obtain that newer version.