Common reasons for bugs in release version not present in debug mode

Question

What are the typical reasons for bugs and abnormal program behavior that manifest themselves only in release compilation mode but which do not occur when in debug mode?

Answer 1

Another reasons could be DB calls. Are you saving and updating same record multiple times in same thread, sometimes for updating. Its possible the update failed or didnt work as expected because the previous create command was still processing and for update, the db call failed to find any record. this wont happen in debug as debugger makes sure to complete all pending tasks before landing.