I confirm. This bug with "Test Runways" has appeared with a patch 4.10m
(in the version 4.09m all work fine).
With the version 4.10m now there is no possibility to take off from the ground.
All connected players throws up in air if under the centre of "Test Runway" there is no water.
This is network bug. I can start from the ground only in offline (start the map by myself creating a server). But all players, that connected to 4.10m server, will start from air (for all "Test Runways" placed on ground, on ice, on road, but not water). Only one way to pass this bug is to place center of "Test Runways" over water.
This is also true for dedicated server.
Probably there are a incompatibility between client side 4.10m and server side 4.10m (unworked "CheckRunTime=2" also allows to speak about incompatibility beetween 4.10m client and 4.10m server).
Does anybody know how to create worked airfields placed on the ground with 4.10m?
How to forbid start in air? Any option does not help. Only rollback to 4.09m...