MWE: GitHub - alfonz19/validator-fail-mwe

After fresh app start calling validation of annotated DTO will work as expected, and after that, also validation of DTO having validation defined in validation-constraints.xml will work as expected. Everything works.

After fresh app start calling validation of DTO having validation defined in validation-constraints.xml will FAIL, and after that, calling validation of annotated DTO will also FAIL. Now every validation FAILS.

Biggest problem is, that if xml-based path is hit first, all validations (probably subset using relevant custom validators) fails.