|Error Lost Internet|
I've had a few people tell me that sometimes they'll get dealt a hand, and one card is missing! I believe this is due to a short internet glitch. Usually all you need to do is reload the page in your browser to fix this. The new network notification should help with this problem too, but I can't be sure. Cards never go missing for me, and so it's hard for me to tell what causes this problem.
If you hover over the notification, you'll see a tooltip that reads "Check internet connection! Click to reload page". Clicking the notification will reload the page in your browser. But that will only work if your internet connection is working. If it's not, then a page reload will fail. So double-check your internet if you see this message.
I've written another post about how the "stats info" panel works; there's been a minor change. Check that out if you use that feature.