When changing the ip address for the v2 cache server it does not connect to the new address. This applies to both global and project settings.

How to reproduce:
1. Open any project.
2. Goto Preferences->Cache Server(global)
3. Enter IP address of valid running cache server.
4. Close preferences.
5. Observe setting is saved but no new connection is made.

Expected behaviour:
Upon closing the preference window, it should disconnect from any existing cache server and connect to the new one.

The also applies to the project settings.

Workaround:
Because the setting is actually saved, restarting the editor creates a connection to the cache server and users and use the cache server as normal.