1. Have workshop addons previously installed and subscribed.
2. Manually delete them in windows explorer.
3. Open launcher (dev).
4. Go to addons.
5. Untick "update" check box.
6. Observe download bar at bottom (it doesnt stop download).
7. Exit launcher (dev).
8. Open launcher (dev).
9. Go to addons.
10. Observe download bar at bottom (it doesnt stop download).