要約

Jira board has  "Hide completed issues older than" option set to a time period, yet it is showing tickets older than that on the board.

環境

Jira Software Cloud

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診断

First, you can verify if the created date is older than the time period set in  "Hide completed issues older than" filter on the board.

Board Settings > General 

 If the above settings looks good, take a look at the Resolved date on the issue view of that ticket on the board.

 If the resolved date is within the time period, then see for the updated date on the issue view. If this shows a recent update then, this is causing the issue.

原因

If the updated date shows a recent one, then the ticket has been updated recently. 

You need to find out how the ticket was updated.  Most of the time, the history tab will show any updates that has been done.

ソリューション

1. Look at the history tab of the issue to identify what updated the issue. You will see something like below.
2. 
3. The above snapshot shows a third party app Issue checklist
4. Now there are situations, when the history tab, may not show any updates, even though the updated date shows. There might be apps like script runner which does not update the history tab. For more information refer Scriptrunner no updates on history tab. In this case open a case with https://support.atlassian.com/ja/contact/
5. In the above situations, in order to remove the issues from the board, you can use Labels. Add labels of your choice, like "OLD" so you can identify the issues which were updated after the time period and can include it in the filter subquery under your general settings of your board.
   ex: AND labels = OLD along with the filter subquery which you can find under the Board settings > General