Thank you for your feedback and apologies for the unfortunate timing of this problem as a significant amount of our engineering team is on holiday. I can assure you this is a high priority, and you will receive a response once progress is made. As mentioned previously in the thread, the most informative method would be providing detailed info to the email alias mailto:rdios@microsoft.com Furthermore, in the meantime can always access previous versions of the Beta versions at https://install.appcenter.ms/orgs/rdmacios-k2vy/apps/microsoft-remote-desktop-for-mac/distribution_groups/all-users-of-microsoft-remote-desktop-for-macand users who have also faced a similar issue provided that the most recent version of 10.7.1 is stable and does encounter this problem.
version 10.7.2 for Mac broke the ability to connect to an RD Gateway. Rolling back to previous versions restores this ability.