Thanks for this find. I had the same issue after updating. After removing " dev " from line 12 and 15, and "dev wg0 " from line 11 it's up and running again. These are the exact differences from the old configuration.
This remedy worked; The downside is that you need to repeat the edit anytime you change any tunnel related settings
[6.11.1] VPN Tunnel Failing
in General Support
Posted
This remedy worked; The downside is that you need to repeat the edit anytime you change any tunnel related settings