Since Spring 6.1.x the default for throwExceptionIfNoHandlerFound is now true which means a 404 no longer occurs but we'll see an Exception instead.

Currently this results in failed tests for some of the generated archetypes. We have either configure throwExceptionIfNoHandlerFound back to false or change the behavior for 2.0.0. As the property is deprecated, I'd vote to changing the behavior and adding an ExceptionHandler instead.

See also: https://docs.spring.io/spring-framework/reference/web/webmvc/mvc-servlet/sequence.html