Will become a valid option (not experimental) in 19.1 

Please contact smartgit@syntevo.com and include a detailed description of which steps you are taking and where results become unexpected.

It works with both gitlab.com and self-hosted instances. Do you have configured your GitLab server in the Preferences, section Hosting Providers?

Thanks, Robert. This will be fixed for 18.2 preview 10.

When having GitHub Hosting Provider configured, in the Log, Details view, there is an additional "Open" link. Isn't that sufficient? If not, please explain why and give more details on where exactly you expect to see a "Copy GitHub URL" action.

Basically, what you are suggesting requires a Log (most likely of the entire repository) for every refresh. That will be too expensive.

Can you please give more details on where you would expect to see this functionality? I guess the Log Files' view would be the appropriate place?

Good point. This will also be helpful to immediately recognize that the "first parent" mode is currently active -- something that was slightly confusing me for my tests ... this will be present in the next (upcoming) build 13138.