Tasks in My Work reappearing after "Done"

We have a bunch of automated tasks that get created in the sub-items in different boards. This has been working out great to keep us on track. The tasks appear in “My Work” and we’re able to select “Done” when they are completed.

Something that is really irritating is that very frequently the task will disappear after being marked “Done” but then reappear as “Not Completed.” Once “Done” is selected again it goes away for good.

Has anybody else seen this behavior and is there a way to stop it from happening?

Thank you!