after loading my save (new one - for 27.4-2 - started yesterday), I got a bunch of notifactions that contratcors can't reach their workplace. They' ve done nothing. After "deleting" a few tiles from the (not build) taxiway and placing it new the material trucks delivered material and the workers started with building it. But only the new placed taxiway tiles. The rest stays as it is (not build). I tried then to "Dismiss All" and then "Deploy All" but the game isn't deploying anyone (see picture 2 - Available 0, deployed 0). Tried also to cancel the contract and accept a new one but no deployment too. Then saved the game (with other name) and reloaded that. then deployment worked again but it deployed way too many workers. But they still build nothing. When trying to Dismiss now the busses arrive but the most stay at heir bus stop. The save attached is quite before this all happened (so maybe for you better reproducable).