Stepping on a MOVE statement, which has a long literal, causes Visual Studio to hang. It may eventually close Visual Studio after a while or pops up the "Choose Just-In-Time Debugger" window with the following message:
"An unhandled exception ('COBOL runtime: Fault detected') occurred in [10156] deven.exe."

Full article: https://portal.microfocus.com/s/article/KM000015604