"Add Tasks" shows on every device connected to Remote with the UI open

[R1D3R175]

How to reproduce?

(we'll assume that the UI is open on a PC X)

1. Open the UI on a PC Y and connect it to a Remote, or just open the UI on the Host itself.
2. Add a task from PC X

Issue

You will be presented with the "Add Task" dialog on each PC and, if you press "Cancel", the task and the files will be cancelled. The "Add Task" dialog will still be present even after pressing "Download Now" from the PC X on every other PC.

Workaround

Pressing "Download Now" doesn't affect anything that is already downloading.

[filecxx]

I don't recommend using multiple devices connected to the same server, but I will fix this in the future.