Harness status: OK

Found 4 tests

4 Pass
Pass	Insertion steps: load event fires synchronously *after* iframe DOM insertion, as part of the iframe element's insertion steps
Pass	Removing steps (innerHTML): script does not run synchronously during iframe destruction
Pass	Removing steps (replaceChildren): script does not run synchronously during iframe destruction
Pass	Removing steps (remove): script does not run synchronously during iframe destruction