I guess there is a regression there. Under admin->Personal->Email Reports. if you change the date selector the UI doesn't change, but the param changes.
See the screenshot, the date selector is 2021-01-04, but the URL param is 2021-01-05
The problem actually seems to be, that the admin interface still works without a url hash, but changing the date in the selector appends/updates the date param in the url hash and not in the normal url parameters.
I Matomo 4.5 the url parameter was updated instead. So this is a regression indeed.