Created attachment 25324 [details] A patch that fixes the issue for me As far as I understand the build.xml jar in POI the poi-ooxml-schemas jar is constructed by taking all the relevant classes from ooxml-schemas.1.0. This is done by a class called OOXmlLite, which runs the unit tests and looks which classes have been loaded. Unfortunately the CTVectorVariant class doesn't seem to be referenced from any unit test, that is why it is not loaded to poi-ooxml-schemas. I created a unit test class that uses the CTVectorVariant. This allows it to be discovered by OOXmlLite, The patch is attached.
Created attachment 25325 [details] a test case, to be placed in test-data/document
Fixed in r935860 Yegor