The Business Process Model and Notation 2.0 is nowadays the de-facto standard for process and workflow modeling. It is supported by many modeling tools and engines which are able to consume and execute processes modeled in the native BPMN 2.0 syntax. Despite its popularity, there are still issues and drawbacks regarding standard compliance of BPMN 2.0 process models. This paper elaborates on reasons for such compliance problems and describes how those compliance issues can be revealed by performing automated checks. Finally, it is shown that standard compliance is still an issue by analyzing a set of process models.