Prepared a MR: https://salsa.debian.org/gnome-team/caribou/-/merge_requests/2
Already tested build (http://debomatic-amd64.debian.net/distribution#unstable/caribou/0.4.21-7.1~/buildlog <http://debomatic-amd64.debian.net/distribution#unstable/caribou/0.4.21-7.1~/buildlog>), installed and verified that issue is not reproducible anymore
