PlanetsCentral

It seems I really missed the host run, that's my own fault. But I simply wander that my status of that turn is green in the game history.

You probably looked at your turn with PCC2 Web and then closed your browser window. Normally, you should exit PCC2 Web using the regular "exit" function which would explicitly submit a (possibly empty) turn file to the host, and offer you to mark the turn temporary.

When you just close your browser window, the system will eventually collect your actions in a turn file, but NOT upload that to the game. This means you can easily resume playing later and submit the turn file correctly, if you closed your browser in error. Or you play on your computer and upload your turn file, so everything is consistent again.

But if you do not upload a turn file, the host will explicitly check whether there is a left-over turn file, and use that. Imagine you're playing for an hour, then your browser crashes, but you're in a hurry to leave for your train, and in the evening you forget to continue. In this case, this feature will play your turn with the partial turn file you already produced, in the hope that this is less of a loss than skipping the entire turn.

This feature has existed for a very long time, when PCC2 Web looked totally different and it was much easier to close a browser window by accident.

--Stefan