We have this strange behavior with issues when closing a sprint.
Our "done" status is in green color in the workflow.
When we are closing the sprint , we have a notification that X issues are done and Y issues will be moved to the next sprint.
And yet, after we close the sprint, many (if not all) of the "done" issues are moved automatically to the new sprint.
Here is an example of such issue that was marked as "done" and yet was moved to the next sprint. time is descending:
