Eureka! This was client's issue not the router. Aparently Windows Firewall is blocking by default ICMP requests when they are coming from a different subnet...

Hello, I'm configuring my new networking setup and I've came across a strange VLAN behavior: I have 2 LANs configured: the LAN (default) with suvnet 10.144.1.1/24 with vlan ID 1 and a second VLAN...