I Have (after insert, after update) trigger on Account sObject. When I manually inserting or updating Account trigger fires, also when I updating existing Account via REST API request it fires too. But when I creating new Account via REST API using INSERT or UPSERT methods trigger is bypassed. Even if trigger contians just one line: System.debug ('trigger fired')
Can't find any relevant info that can help to determine the problem. Maybe there is some restriction or settings to allow firing after insert by REST API?