I have Created Jenkins pipeline using pipeline script. After first run when i click on configure and see the pipeline code it shows empty.I have try to execute the pipeline it run but the code is empty. I am unable to update my pipeline or my code as it is empty. Jenkins Version i use 2.204.2. I have tried copying pipeline multiple time but it gets blank after i run the job.

I have tried taking checkout of Jenkins file from git repository.Still it has same problem the settings get clears and it shows empty when i open it for the next time

There is no issue with the free style project it works perfect and all configurations are good.