Exporting multiple processes displays incorrectly in the task manager

[matthias-ronge]

Describe the bug
If you export several processes at the same time using the checkboxes and the "Export DMS" function in the Actions menu, an export task is displayed for each process in the task manager, but the progress for all three tasks is displayed in one task, while the others make no progress.

To Reproduce
Steps to reproduce the behavior:

1. Select multiple processes using the checkboxes.
2. Trigger the “Export DMS” function in the Actions menu.
3. Go to Task Manager
4. See error

Expected behavior
Each automatic task should update its own line in the Task Manager

Screenshots

Release
3.6.0

Desktop (please complete the following information):

• Windows 10
• Firefox 123.0