Done issues started showing up in Backlog / next sprint

[bee]

I started seeing my previously done issues showing up in my Backlog and after completed a sprint, the done issue also get carried forward into the next sprint. This is seriously affecting my work. Any idea ? Thanks.

I have checked the workflow and post functions, can't quite figure out what's wrong. 

[Niranjan]

Hi @bee ,

What is the workflow status configured in the rightmost column of your scrum board? The issues in the statuses that are at the right most are considered as Done. You may have an issue in Done status, but the board may not have "Done" status mapped to the rightmost column of your scrum board. 

Drag and Drop "Done" status to the rightmost column and try again.