In my SharePoint Designer 2013 workflow, I have it set to send a reminder email if the condition is met. It will send the email that I have placed there, but it also sends another reminder email that doesn't appear there.
I'm not sure what is causing this. To troubleshoot, I have changed the workflow variable to make sure it wasn't accidentally being shared somewhere else.
I deleted the entire step where the email was, saved the workflow and then rebuilt it.
The only thing I can think of that would maybe cause this is because I copied and pasted when I built it, but I made sure to go back and change the fields and variables to make them unique to the condition. I'm not entirely sure that that's the guilty part, but its the only thing i can think of.
I am also having the same issue when I create new list items. It is only in the workflow once to write to the "Workflow History Test" list, but when I go to look, it has written it 2 or 3 times.