Thank you, Dominik! Looks like there is one other new one -- very rare -- that isn't caused by the embedded extractor or the WMF component.
java.lang.NegativeArraySizeException at o.a.p.ddf.EscherComplexProperty.resizeComplexData(EscherComplexProperty.java:102) at o.a.p.ddf.EscherArrayProperty.setArrayData(EscherArrayProperty.java:169) at o.a.p.ddf.EscherPropertyFactory.createProperties(EscherPropertyFactory.java:81) at o.a.p.ddf.AbstractEscherOptRecord.fillFields(AbstractEscherOptRecord.java:55) at o.a.p.ddf.EscherContainerRecord.fillFields(EscherContainerRecord.java:81) at o.a.p.ddf.EscherContainerRecord.fillFields(EscherContainerRecord.java:81) at o.a.p.ddf.EscherContainerRecord.fillFields(EscherContainerRecord.java:81) at o.a.p.ddf.EscherContainerRecord.fillFields(EscherContainerRecord.java:81) at o.a.p.hwpf.model.EscherRecordHolder.fillEscherRecords(EscherRecordHolder.java:56) at o.a.p.hwpf.model.EscherRecordHolder.(EscherRecordHolder.java:45) at o.a.p.hwpf.HWPFDocument.(HWPFDocument.java:275) at o.a.p.hwpf.HWPFDocument.(HWPFDocument.java:157) at o.a.p.hwpf.HWPFDocument.(HWPFDocument.java:145) at o.a.p.stress.HWPFFileHandler.handleFile(HWPFFileHandler.java:32) at org.dstadler.commoncrawl.FileHandlingRunnable.run(FileHandlingRunnable.java:64) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1161) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:844)