Azure AD Application Proxy - Remote Desktop Services (RDS) RDP UDP Support

A client uses an AAD app proxy to publish RDS and followed these Microsoft docs to set everything up ... https://docs.microsoft.com/en-us/azure/active-directory/app-proxy/application-proxy-integrate-with-remote-desktop-services

Users authenticate against the remote desktop gateway to then access VMs that are hosted on-prem. Users now report that RDP sessions are somewhat slow and laggy with the sessions freezing every 10-20s for 1-2s.

We've checked the entire environment and found out that RDP sessions are using UDP 3391 but TCP 443.

There seems to be a limitation with the app proxy being unable to support UDP as first noticed in 2017 (https://social.technet.microsoft.com/Forums/windows/en-US/800bbe5e-afbc-46ed-bdb9-9e3f942337c7/performance-issues-when-using-rds-2016-in-azure-with-azure-ad-ds-and-azure-app-proxy), then again in 2019 (https://social.technet.microsoft.com/Forums/en-US/8dd34139-9aa2-4339-8aed-1c6e645b5766/rds2019-azure-web-proxy-udp) and again in 2022 (https://feedback.azure.com/d365community/idea/f3a05c53-853d-ec11-a819-000d3ae2b5ca).

Can someone comfirm this? Is there an update from Microsoft on when the app proxy might support UDP?