Timers are not displayed for my recipes or when printed

I added a few recipes to GNOME Recipes, but when I view my recipes under the "My Recipes" category from the main screen, the timers are not shown, instead only showing a link consisting of a single diamond-like character (see screenshot). The text for the timer is shown in the tooltip on hover though.

Also, when the recipe is printed, the timer lines are completely blank on the paper, leaving odd gaps in between steps with no timing information.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-recipes 1.6.2-1
ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
Uname: Linux 4.13.0-11-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 26 17:35:06 2017
InstallationDate: Installed on 2017-09-10 (16 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170831)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-recipes
UpgradeStatus: No upgrade log present (probably fresh install)