Ah, apparently the DX patch breaks the .desktop file format:
[Desktop Entry] Name=Evolution [...]
[Compose Shortcut Group] Name=Compose New Message Exec=evolution mailto: OnlyShowIn=Messaging Menu
[Contacts Shortcut Group] Name=Contacts Exec=evolution -c contacts OnlyShowIn=Messaging Menu
X-Ubuntu-Gettext-Domain=evolution-2.28
So the gettext domain is in the wrong section now.
Ah, apparently the DX patch breaks the .desktop file format:
[Desktop Entry]
Name=Evolution
[...]
[Compose Shortcut Group] Messaging Menu
Name=Compose New Message
Exec=evolution mailto:
OnlyShowIn=
[Contacts Shortcut Group] Messaging Menu
Name=Contacts
Exec=evolution -c contacts
OnlyShowIn=
X-Ubuntu- Gettext- Domain= evolution- 2.28
So the gettext domain is in the wrong section now.