This was caused because the Thread.CurrentThread.CurrentUICulture is set by UmbracoPublishedContentCultureProvider which runs before any of the filters, meaning that CurrentUICulture was never set correctly, so to fix this I've made the EagerMatcherPolicy detect if it's a UmbracoPageController and then do the domain routing and setting a dummy UmbracoRouteValues which is then used to assign the correct CurrentUICulture by the UmbracoPublishedContentCultureProvider.
Fixes #16626
This was caused because the
Thread.CurrentThread.CurrentUICultureis set byUmbracoPublishedContentCultureProviderwhich runs before any of the filters, meaning thatCurrentUICulturewas never set correctly, so to fix this I've made theEagerMatcherPolicydetect if it's aUmbracoPageControllerand then do the domain routing and setting a dummyUmbracoRouteValueswhich is then used to assign the correctCurrentUICultureby theUmbracoPublishedContentCultureProvider.