MariaDB hangs on commit

In an environment with 3 node Galera Cluster and some replicas, for some reason, almost all the transactions hang in the “starting” state on the commit statement.
We tried to kill these transactions without success.
We tried to restart the service but it hangs on stopping Galera replication.
By looking at the backtrace it seems that we have a mutex deadlock on the group commit feature.

Unfortunately, we didn't find a way to reproduce the problem