Apache Config: Websockets Proxy WSS request to WS backend
This line Redirect /wss /wss/ adds a trailing slash to /wss if not present (by default, it's a 302 redirect). And you're trying to connect to wss://MYSERVER.com:443/wss, which explains the redirect.
Solution:try connecting to wss://MYSERVER.com:443/wss/ (with the trailing slash). This should now work as expected.