I was about to submit the same comment. This was the thing that would have prevented me from upgrading. I searched if it waa fixed. As it would have affected Little snitch and Mullvad VPN which is essential apps on my mac.
Yep, OrbStack's networking issue (similar PF bug) was also fixed in RC 2.
What about the dynamic memory allocation bug?
No news on that :/
Does the built-in Apple firewall allow blocking of specific applications sending outbound traffic? I know you can block inbound traffic per application.
Depends on what you mean by builtin. The one in settings? No. pf does, however, allow you to do this. Murus is what you need if you want/need a frontend for pf.