when I want to create a vehicle route using the AI script in the world editor, but the vehicle trajectory and windows trajectory do not appear when clicked. appears for a second then disappears. and so on. I've even cleared the cache several times every time I want to start playing, but the result is still the same. can anyone help me on this..? Thank You
Sounds like a bug. You could try resetting the window layout in the window menu. It works sometimes for missing windows elsewhere, but because you're seeing it for a second, I'll be honest, I'm not optimistic that this will work.
I'm sure this is a bug that happens when you hide these windows by clicking the icon on the top-left corner (if this has not been fixed). Reset the windows layout and it should be solved.