mate-font-viewer shows Gtk-CRITICAL messages in terminal

[N0rbert]

Expected behaviour

font(s) is/are found, the terminal is empty

Actual behaviour

font(s) is/are found, but terminal has Gtk critical messages like

(mate-font-viewer:21717): Gtk-CRITICAL **: 18:57:01.681: gtk_tree_model_filter_real_unref_node: assertion 'elt->ref_count > 0' failed

Steps to reproduce the behaviour

1. Install Ubuntu MATE 21.10
2. Launch mate-font-viewer from the terminal
3. Wait mate-font-viewer to load all fonts

MATE general version

1.26.0

Package version

1.26.0-0ubuntu1

Linux Distribution

Ubuntu MATE 21.10

Link to bugreport of your Distribution (requirement)

https://bugs.launchpad.net/ubuntu/+source/mate-control-center/+bug/1863429

[N0rbert]

Still happens on latest Ubuntu MATE 22.04 LTS beta.

[lukefromdc]

I was just unable to duplicate this on Debian Unstable (no doubt w different installed fonts though). Got a clean run from terminal w no messages or warnings shown

[zhuyaliang]

No bad output

@test-pc:~/work/project/accountsservice-22.07.5$ cat /etc/os-release 
PRETTY_NAME="Ubuntu 22.04 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04 (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy
test@test-pc:~/work/project/accountsservice-22.07.5$ mate-font-viewer 

[N0rbert]

I can't reproduce on daily driver Debian 11 and on upcoming Debian 12.