Subscriptions vs. Legacy_subscriptions link

Problem:
We do not see detail of subscription in Foreman 1.18.3 (and 1.19 and 1.20) on link
https://${foreman_server}/subscriptions/${id_of_subscription}/ in WebUI

Expected outcome:
See details of specific subscription

Foreman and Proxy versions:
1.18.3
Other relevant data:
Details are available when we visit
https://${foreman_server}/legacy_subscriptions/${id_of_subscription}/

I recently talked to the Foreman team about this:

Thank you !