Wrong XMLSchema validation?

Please see attached example.
Expected result would be all True.

Python : sys.version_info(major=3, minor=9, micro=1, releaselevel='final', serial=0)
lxml.etree : (4, 5, 1, 0)
libxml used : (2, 9, 10)
libxml compiled : (2, 9, 10)
libxslt used : (1, 1, 34)
libxslt compiled : (1, 1, 34)

This is real world case, simpleType is extracted from https://www.agenziaentrate.gov.it/portale/documents/20143/2370834/Schema_VFPR12.xsd

According to validation with lxml, <email address hidden> is not valid. xmlschema disagrees. I'm not sure which is which, my brain goes parse error reading the regular expression...