Tasks are visually duplicating themselves when I add or move tasks between the Gantt, Backlog, and Sprint lists. These are not real duplicates. They are “ghost” duplicates that remain linked to the original task, meaning both visible copies are actually the same underlying item.

This is very confusing during planning because it looks like I accidentally created a duplicate. When I delete one of the “duplicates,” it deletes the original task as well, since they are connected. So it becomes risky to clean up the list, and it’s hard to trust what I’m seeing while preparing sprints and backlogs. In the images I have only selected one task, the original one, while the system shows also the "ghost" one as selected.

I’m a new customer and this issue is blocking me from using the software properly, so I’d appreciate this being treated as urgent.