SpringBoot 'spring.web.resources.cache.use-last-modified=false' doesn't work with Spring MVC

We're using Spring Boot 2.4.4 with Spring MVC to build an application that serves static resources. We noticed that although we set spring.web.resources.cache.use-last-modified=false, the server adds a Last-Modified header. Looking at the source, the property only seems to be used in WebFluxAutoConfiguration and not in WebMvcAutoConfiguration (https://github.com/spring-projects/spring-boot/search?q=setuselastmodified). Is this intentional or an oversight?

Comment From: snicoll

Thanks for the report, that looks like an oversight to me.

Comment From: wilkinsona

This looks like a regression. It was there originally (in 2.4.0) but was lost in, I think, https://github.com/spring-projects/spring-boot/commit/f1fcfa6fc30c527ab5dd89ddeb069cd0f6038c40.