Network firewall rules

In zero trust, gateway, firewall policy, network, I have a few rules setup. and RDP works
destination ip is 10.1.1.100
OR destination ip is 10.1.1.101
AND
destination port is 3389
ALLOW

However, when I activate the following rule, it stops working and I get an access blocked message on the client:

Destination IP in 10.1.1.0/24 Block

I thought Allow and block rules processed in order. (top down).

thanks!