Hello,
I'm encountering a very annoying issue where I have added custom fields to my issues (a URL, a user) and then when I update those custom fields on a given issue, the resolution is set to 'Fixed' (even though I don't update the status!). I have tried this in multiple workflows, including the default, so I don't think the bug is there. Rather, it must be something with the custom fields. I am using JIRA Agile. Thanks for the help!