Before the most recent update, I had a very simple method that would avoid any sync issues: after switching pc's, wait for the map to fully load and show you your offline progress and then wait 10 more seconds before clicking the window. Within those 10 seconds, the game would always sync with the server and the offline progress window would refresh with the actual up-to-date data.

In the distant past I had the occasional sync issue, but ever since I started using this method I haven't had a single one. Until the last update.

I'm afraid I can't give more details than that since I'm not really doing anything. I just load the game and wait, just like I always have. However since the last update the game doesn't seem to sync properly any more. I have lost progress several times now. Anyone else seeing an increase in sync issues since the update?

Yep I agree, have lost progress a few times - I'm now syncing, and then going back to Idle home and back into the level to try to avoid it; I'm still nervous every time I switch to mobile though.

I also can't really give any useful diagnostic info except that it 'felt like' it was worse if playing more than one idle level at the same time, but I can't prove it, so probably ignorable

use https://www.warzone.com/ReportBug (Help > Contact > Report Bug)