gitg writes warnings to terminal

When launching gitg from terminal the following warnings appear. Nothing serious but annoying nevertheless:

gitg:5425): GLib-GIO-CRITICAL **: 07:16:49.913: g_converter_convert: assertion 'outbuf_size > 0' failed

** (gitg:5425): WARNING **: 07:16:49.914: gitg-resource.vala:33: Error while loading resource: style-unix.css:1:0Failed to import: The resource at ?/org/gnome/gitg/ui/style-unix.css? failed to decompress

This looks like it has been fixed upstream:
https://gitlab.gnome.org/GNOME/gitg/issues/128

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gitg 3.26.0-4
ProcVersionSignature: Ubuntu 4.15.0-88.88-generic 4.15.18
Uname: Linux 4.15.0-88-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar 13 07:22:05 2020
InstallationDate: Installed on 2018-08-20 (570 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: gitg
UpgradeStatus: No upgrade log present (probably fresh install)