interesting setup, and I'm surprised that it actually works 😉 - bridging both client and server sides is tricky, very tricky.
The client #3 setup lists
local 192.168.0.14
port 11940
dev tap
ifconfig 192.168.0.240 255.255.255.0
the 'local' does not seem right - try removing it.
also, I'm not surprised that browsing works, as domain browsers on both ends will be in sync, eventually.
The big question is , how will both LANs know where to find client #3 ?