When the render strategy is REDIRECT_TO_BUFFER, redirects cannot be nested. After the second redirect, Wicket renders the buffered first page in preference to the second page. The relevant code is in WebPageRenderer.respond:
The attached quickstart demonstrates the issue. Simply navigate to the home page. The observed behavior is that Page1 is displayed, but I expect Page2 to be displayed.
I can work around the issue by calling WebApplication.getAndRemoveBufferedResponse() to clear the render buffer, but I am uneasy with this solution since it seems like I am playing with Wicket internals; albeit the function is public.