the /ping command shows all 0s...

ping: 0.0 +/- 0.0ms
bps out: 0 in: 0

My latency is pretty low but I'm pretty sure it's not THAT low...

Yep /ping is broken

On Windows only? Or all platforms?

I just tested this on Linux after doing an update and I got a ping response.

ping:63.3 +/- 0 15.5ms
bps out: 0 in: 0

I am on Windows. I'm still seeing 0.0s.

We just released a client patch that fixes this /ping issue and a crashing issue when attempting to log into the test server.