I gladly upgraded after @LTS_Tom Video. Everything went fine.
On Upgrade the new version of the WireGuard package was installed.
My 3 site-to-site connections all up.
Today I rebooted my pfsense to debug an issue. After the reboot the VPN gateways stayed hidden and the WireGuard service was stopped. Not starting on click. To troubleshoot I reinstalled the package. Everything fine, up and running.
Another reboot to test. Same thing, tunnels offline. Checked in WireGuard Status menu. Handshake to the peers green. Went to Routing an activated the gateways manually. All up and online. A few seconds later the WireGuard service starts (on it’s own) and turns green.
Did not find anything on google or netgate.