Pull request comments disappear on subsequent analysis

[thomasvsundert]

Expected Behavior

If we run Sonarqube in preview mode twice and post the results to a pull request, we would expect to see the same comments

Actual Behavior

On the first run, the correct comments appear.
On the second run, all comments disappear.

I think the root cause is that when scanning in preview mode, Sonarqube ignores previously found issues and doesn't report them anymore. The Sonarqube bitbucket plugin then thinks there are no issues and removes the old issues from the PR.

Plug-in version, SonarQube version, CI system, build type

SonarQube v7.1.0.11001
Plugin v1.2.3