Spring MVC Cannot configure views' path - spring

Question

I have a project that uses Spring Boot 2.2.5 (Spring version 5) - here is a link to a bare minimum project demonstrating my problem. In all the tutorials I followed they claim views' path can either be configured inside application.properties like this:
spring.mvc.view.prefix=/WEB-INF/jsp
spring.mvc.view.suffix=.jsp
or inside WebMvcConfigurationSupport derived class like this:
#Override
public void configureViewResolvers(final ViewResolverRegistry registry) {
registry.jsp("classpath:/", ".jsp");
}
or like this:
#Override
public void configureViewResolvers(final ViewResolverRegistry registry) {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
registry.viewResolver(resolver);
}
None of which work in my case. Spring will always serve .jsp files from src/main/webapp and from nowhere else in spite of my configuration or lack of it. No other file types will be served from that directory, not even HTML.
Some tutorials claim that when not configured Spring will serve anywhere from
src/main/resources/static
src/main/resources/public
src/main/resources/resources
src/main/java/META-INF/resources
I am yet to see this.
CSS and Javascript files will be served from src/main/resources but only if I have this in my MVC configuration:
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/**")
.addResourceLocations("classpath:/");
}
Configuring this from application.properties doesn't work
spring.resources.static-locations=classpath:/
In relation to this are there other special folder names like classpath: that can be used? I tried webapp: but it doesn't seem to be expanded
UPDATE: I thought for a moment that maybe subclassing WebMvcConfigurationSupport is to blame since it acts like #EnableWebMvc. Subclassing WebMvcConfigurer brought the following error. Placing #EnableWebMvc solves it.
An attempt was made to call a method that does not exist. The attempt was made from the following location:
org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.requestMappingHandlerAdapter(WebMvcAutoConfiguration.java:369)
The following method did not exist:
'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.requestMappingHandlerAdapter(org.springframework.web.accept.ContentNegotiationManager, org.springframework.format.support.FormattingConversionService, org.springframework.validation.Validator)'
I read somewhere that JSP view are not supported inside embedded servlets. What a nice feature! Anyway I don't thing this is related to my problem.
I would like to stick to JSP and avoid Thymeleaf as my project is based on React. I will create MVC pages in order to be Search engine friendly, though but I will figure this out along the way.
Here is a screenshot of my project's layout