Hi,

we noticed that the default value for the page was 0 when having a spring-boot application with spring.data.web.pageable.one-indexed-parameters=true as well as using a @PageableDefault on the controller.

The @PageableDefault annotation has 0 as the default value for the page (see here). This is the desired behavior (as far as I can tell) as spring normalizes the pageable before injecting it into the controller method. This is done in this method.

So, e.g., if the newly added test controller was to be called with the following query parameters

/test1?prefix_pages=1

the injected pageable in the controller would return 0 for getPageNumber()

@GetMapping("/test1")
public String getPatientList1(
    @PageableDefault(size = 100, sort = { "someField", "someoTHER" }, direction = Sort.Direction.DESC) 
    @ParameterObject 
    Pageable pageable
) {
        System.out.println(pageable.getPageNumber()) // prints 0
	return "bla";
}

Let me know if you prefer to have a separate TestApp for this, happy to adjust this.