This is a rendering bug brought by version 2.7, which is a problem of the game itself.
When there is no cloud layer set for a task, there is a certain probability that the exposure will be too large (too many airplanes, too dark environment) during the execution of the game. As I hope to get a brighter night sky in M08, I can't preset clouds for the mission.
At present, the solution I know is to use the editor to open the task, set any preset weather for the task, then run the task, then exit and change the cloud settings back to the default (none), and then run the task to solve this problem.