Hello,
Novice JIRA user here. I have a Business Project with dozens of individual Issues setup as Tasks and Sub-Tasks.
I'm using the Status option 'Done' to indicate when we're finished with a Task. I thought that was a default option in the workflow and not one I created. Screenshot of workflow in use:

My question is why do those issues marked as Done still appear in the 'Open issues' filter? This screenshot shows the issue with a Status of Done and the Open issues list visible.

The issue also does appear in the 'Done issues' filter, which I expect. Showing it in the Open issues list leads to confusion and is annoying.
Thank you!