I've created a completely new story campaign, added a new level, called it "LevelTemplate" and quickly painted some grass (note the brown ground, this is the level template from now on):
https://imgur.com/a/H5DQYh4Next, I've created a RootTemplate for the Level "LevelTemplate" and a new level "Main", placed the Level Template in there, generated the AI grid, added a trigger as a starting point for the character creation script:
https://imgur.com/a/X9Z9rbOI've added the character creation setup from the wiki and did a story build, this is what I get when I launch the game: Instances in the level template in the actual game.
https://imgur.com/a/0j4ea2DI'm happy to see the system at work. But, well this test case is not complete yet. The main level is pretty empty right there. So I headed back to the editor and painted some grass onto the main level terrain:
https://imgur.com/a/TPZ1ZNBAnd, yes, it's broken. Back in the game, the instances of the level template now become lost / hidden / whatever:
https://imgur.com/a/ddyqbq6