WG Site2Site issues

[itBJA]

Hello,
due to massive performance issues when using SMB over IPSec I tried Wireguard Site2Site.

Tunnel is up, icmp is working fine.
I used for testing a IPv4* * * rule.

But traffice beside icmp is not possible, I get massive blocks on the WG-Interfaces:

Even when setting the rule to Any flags - sloppy state it doesn't work.

I'm very confused right now.