Hi,
facts:
* using SSH commands with tag 'autogenerated:..' results in Show Comments button in PG UI working as expected
* we use REST API instead of SSH commands, this way Jenkins is able to find missed uploaded PS while Jenkins is down and trigger the builds once Jenkins is up.
* Jenkins Gerrit plugin only allows editing SSH command properties, but for REST plugin copies options from SSH command properties.
* While using REST plugin doesn't copy properties for --tag options
* While using REST Jenkins sets tag 'jenkins-gerrit-trigger' which is not recognized by Gerrit as bot message
* There is an issue for Gerrit tag documentation [1].
Is 'autogenerated:' prefix required in tags or not? It seems there mixed developers' opinions in [1].
* In case 'yes' [1] then there is an issue with Jenkins Gerrit Trigger plugin: generated tags for REST should start with 'autogenerated:' prefix.
* In case 'no' then PG UI needs fixing.