I have a simple document library with a simple workflow behind it which starts when a file is created. The workflow update a status column of the document and set it to "Processed". When I upload a new document and click "OK" it goes to the editform.aspx where you can adjust the metadata of that document. When I try to save I get the error as shown below:

It looks like my workflow blocks the editform to be completed.

Weird thing: when I make one of the metadata fields required, I don't get this issue because then the workflow will begin after the required info is added through the editform.

Is there a way to solve this issue?