Users are unable to administer some issues (but can administer others in the same pull request).
The users certainly has permission to administer issues.
The issues that cannot be administered are of the type ‘SomeProperty’ is obsolete: ‘Some comment’ and are marked as detected by the external rules engine ROSLYN.
Can such issues not be closed via the web interface? What options are available to manage such issues?
“External issues” are those produced by third-party analysis tools, in this case a third-party Roslyn analyzer. The SonarScanner for .NET will push such third-party Roslyn issues to SonarCloud/SonarQube automatically.
They cannot be managed within SonarCloud; for instance, there is no ability to mark them as False Positive.
The activation of the rules that raise these issues cannot be managed within SonarCloud. External rules are not visible on the Rules page or reflected in any Quality Profile.
There are a couple of things you can do for third-party Roslyn issues in the SonarCloud UI:
you can completely disable the import of third-party issues, or
change the severity level at which they are reported.
See the C# section on this page for more information.
You can also configure which rules are run using a C# RuleSet file i.e. create an appropriate RuleSet file and reference it in your MSBuild projects.