I installed the version of deja-dup from -proposed for artful and can confirm the restore dialog is no longer blank.
$ apt-cache policy deja-dup deja-dup: Installed: 36.3-0ubuntu0.1 Candidate: 36.3-0ubuntu0.1 Version table: *** 36.3-0ubuntu0.1 100 100 /var/lib/dpkg/status 36.2-0ubuntu1 500 500 http://192.168.10.7/ubuntu artful/main amd64 Packages
I installed the version of deja-dup from -proposed for artful and can confirm the restore dialog is no longer blank.
$ apt-cache policy deja-dup dpkg/status 192.168. 10.7/ubuntu artful/main amd64 Packages
deja-dup:
Installed: 36.3-0ubuntu0.1
Candidate: 36.3-0ubuntu0.1
Version table:
*** 36.3-0ubuntu0.1 100
100 /var/lib/
36.2-0ubuntu1 500
500 http://