After updating Edge-Dev from 89.0.731.0 to 89.0.752.1 KeePassXC Browser seems to stop communicating with KeePassNatMsg correctly.

I've verified in the registry that the entry for the plugin is in Native Messaging Host and checked that the Edge integration and Proxy exist and work.

Reverting the version of Edge-Dev back to 89.0.731.0 fixes the issue.

I've filed a bug with the Edge-Dev team as well.

Error message from the KeePassXC Browser plugin is:
Connecting to native messaging host org.keepassxc.keepassxc_browser
keepass.js:1029 Failed to connect: Access to the specified native messaging host is forbidden.