GNOME Bugzilla – Bug 758610
Bad calendar drawing while using wayland compositor
Last modified: 2015-11-25 17:06:32 UTC
Created attachment 316189 [details] Screenshot showing how is the calendar shown using wayland While using the wayland compositor in Fedora 23 Workstation edition, if you open the calendar from GNOME shell dates are not correctly aligned with the background, something that does not happen while using X. I will attach a screenshot of it
It seems you're using a custom gnome-shell theme. Can you try to use the default theme?
Effectively, that was the cause of the issue, I'll report the bug to the theme creator