There is a very similar issue already reported here, but I believe it is a different problem.

I can add objects and work with them without an issue but the next time i open Buldozer the new objects will turn invisible alongside most of the objects I placed before. Terrain Editor it self sees them fine, the objects are definitely right there where I placed them. Buldozer can neither see them nor select them, if I select the object in Terrain Editor, Buldozer ignores it.

I can make the objects reappear by selecting them in Terrain Editor and changing their elevation by what ever amount, the Buldozer camera then falls to the ground and turns sideways until I click on the Buldozer window, then both the camera and the object appear normally.

All types of objects are affected by this, but not all individual objects for some reason, there is a boat and a patch of grass and a few rocks that persist through all session, even though entire forests and entire mountains of rocks would turn invisible not matter how many times i trick them into existence individually.

It is definitely a bug, and while certainly not a game breaker, it makes it so awkward to work with and wastes so much of my time. Any help with this would be greatly appreciated. {F24585}