Great catch!Can something similar be also the reason��SHTextStyler>>styleInBackgroundProcess: spawns zombie processes?Even with this fix script [1] blocks in testBenchFor. If I apply the fix proposed by ben in this thread or the slice for��issue 17050��then [1] does not block in testBenchFor.[1]��./pharo Pharo.image eval "CommandLineTestRunner runClasses: {GTInspectorExamplesTest} named: 'x'. CommandLineTestRunner runClasses: {BlockClosureTest} named: 'y'"