Router connection SSH stuck issue

Hello author, when I tried to connect to SSH through configuring the router, I encountered a stuck issue.
For example, my computer's IP address is 192.168.50.50, and I accessed 192.168.30.100 through routing configuration,
route add 192.168.30.100 mask 255.255.255.255 192.168.50.1
At this time, my computer can directly ping 192.168.30.100 and access port 22, but when using this WindTerm to connect to ssh 192.168.30.100, I found it stuck.
However, there is no problem connecting SSH directly to the local area network.

Reproduce the routed connection using the stated IP addresses and route command, then compare it with a direct local-network SSH connection. Trace where WindTerm's SSH connection stops progressing; done means SSH through the configured route connects successfully without affecting direct LAN connections.

Written by the indexing model from the issue text.