From this non-root 1310 bridge, we are connecting to an old BR500 root bridge via wireless.
Clients inside the non-root bridge are able to access devices anywhere on the subnet (servers, workstations, etc.) via the bridge (wireless connection) with no problems. But, these clients cannot access the default gateway of the subnet or pass through the router (I can't even ping the default gateway router interface from the 1310 bridge; yet from the bridge, I can ping anything else on the same subnet).
Of course, clients on the wired LAN are able to browse the Internet, etc. -- it is only clients behind this bridge that cannot seem to "get out" so to speak.
This is a small LAN -- so everything is VLAN1 with a router at the boundary.
I have even ran a "sh ip arp" on the 1310 to ensure that a MAC entry is in the table for the default gateway IP, and it is there.