Likely as consequence of Xerces jar being removed via https://issues.redhat.com/browse/WFLY-18644, we are now seeing the following (2) XML Binding TCK failures:

Oct 23, 2023, 6:09:56 PM Finished xml_schema/msData/datatypes/Facets/Schemas/jaxb/IDREFS_length006_395.html#IDREFS_length006_395 Failed. compilation did not fail as expected
Pass: 5,321 Fail: 1 Error: 0 Not-Run: 19,304

Oct 23, 2023, 6:12:01 PM Finished xml_schema/msData/datatypes/Facets/Schemas/jaxb/NMTOKENS_length006_438.html#NMTOKENS_length006_438 Failed. compilation did not fail as expected
Pass: 5,554 Fail: 2 Error: 0 Not-Run: 19,070

Note that Xerces was being added to the (TCK) classpath via https://github.com/wildfly/wildfly-tck-runners/blob/main/jakarta-xml-binding/bin/run-tck.sh#L115