That is a new one on us - and to be honest I am not sure how that can have happened. We will do some digging to see if anything jumps out.
We did have a problem with that in one of the pre-stable 1.8 releases, but you shouldn’t have experienced that going from 1.7.4 to 1.8.0. The upgrade creates some archived xlf files in your library folder, which are the pre-upgrade state of those layouts. Can you select one which had the issue and send it over to us? We will run it through a diagnostic and see why it didn’t tick those boxes.
It would be interesting to know what step the upgrade wizard appeared on - i would imagine that it was some sort of timeout, and that completing the wizard through the browser would have been sufficient.