Url redirect not working in umbraco 10

hi. in umbraco 10 hosted on azure webapp.
i have a page with a name.
when i change that name i am able to browse the new page url.
but when i try the old name it returnes 404.
in the info tab there is “Redirect URL Management” section that shows the old url. and the old url is shown in the url tracker.
so as far as i know the old name should redirect to the new one.
do i need to enable somthing for this to work?

EDIT : i noticed that this failes in any linux when redicret to is for hebrew!

InvalidOperationException: Invalid non-ASCII or control character in header: 0x05D1


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/112478-url-redirect-not-working-in-umbraco-10