When you start a new game, the tiles that you start with beneath the printing pod are 'overlaid' with natural tiles. You can't dig them, they are in fact built tiles. If you deconstruct one, it dispels the 'natural' overlay in adjacent tiles I think up to 2 away. I did first load an OI save when I first installed the AT update, but even upon restarting the game, it still did the same thing.
Steps to Reproduce
Start a new game in AT.
Status: Known Issue
We are aware of this issue and have it logged internally but either we do not have a fix ready yet or we are not planning on addressing the issue in the immediate future.