A build fails due to a compilation problems, but because a few tests are quarantined, the Task that builds and tests is made successful by Bamboo.

The problem is that other builds use the code that should have been built by the Task and in this case, even if tests were quarentined, the Task should have failed because of the compilation failed.

Quarantining should only change the state of the build if the state is based on test failures.

Separating the logic into two tasks might be a good workaround. (Where the first 'build' task is marked as not producing test results).