This issue is a knock-on from https://github.com/jenkinsci/pipeline-graph-analysis-plugin/commit/20e4807f35be96ea07a9c66d4238edf75705e4b5.

In our scripted pipelines we throw FlowInterruptedExceptions to set the Stage status. After upgrading from 1.7 to 1.9, stages in this context are now being marked Aborted. Previously the stages were marked as Failure.