HI,

I have just upgraded CMS ver. to 12.20.0 and now I am having this issue that IPageRouteHelper.PageLink is null when posting form via AjaxBeginForm().

This is the Ajax form and it posts to a POST method in TestPage name "LoginTest"

@using (Html.AjaxBeginForm("LoginTest", "TestPage", new { ReturnUrl = Model.GoToUrl }, new AjaxOptions
{
    UpdateTargetId = Model.xx,
    HttpMethod = "POST",
    InsertionMode = InsertionMode.Replace,
    OnSuccess = "xx",
    OnBegin = "xx",
    OnComplete = "xx"
}))

TestPage controller have this XXRedirection attribute

    [XXRedirection]
public class TestPageController : PageControllerBase<TestPage>
    {
 [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> LoginTest(XX loginInput)
        {
            if (ModelState.IsValid)
                return await DoSomething();
            return PartialView(PartialLoginController, loginInput);
        }

}
-------------------------------------------------------------------------------------------
[AttributeUsage(AttributeTargets.Class)]
    public class XXRedirectionAttribute : ActionFilterAttribute
    {
        private Injected<IPageRouteHelper> _pageRouteHelper;
        private Injected<IContextModeResolver> _contextModeResolver;

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            base.OnActionExecuting(filterContext);
           
           var pageRouteHelper = _pageRouteHelper.Service;
          
           This is null
           var pageLink = pageRouteHelper.PageLink
          
           }

Here PageLink is null.  

Any input would be appreciated