Hello, every time I try to do a test drive on my route, I keep falling out of the world. Can anyone help me solve this issue? Thanks!
Definitely sounds like something is missing collision. My guess is that it would be the landscape streaming proxy for the tile you're loading on. The editor seems to have issues when it comes to saving the landscape collision data. Have you tried selecting it and regenerating collision? (in the right-mouse-button context menu. The automatic option probably works too, but I haven't tried it.)
Or he has not deleted his spawn point, and selected default player start instead of current camera location…
As I said on Discord, you also can just use a timetable service and set the service name in the Editor Preferences under "PIE - Initial Service Name" to make you spawn within a loco and on the driver's seat. I pretty much use this way all the time for testing. Just can set this entry in the Editor Preferences, type in "Service" in the search box and it will gives you the entry at the bottom. Here named as T1 for "Test Service 1" (I keep it short so that when changing and testing different services, you don't have to retype too much). This name needs to be exact with a name of a service on your timetable.