Dragging songs to the end of the queue makes them disappear

[exhuma]

Demo

• See https://youtu.be/Rnju1ly3HNo

Steps to reproduce

• Start playing an album
• Select another album, right click it and choose: "Add to Queue"
• Open the Queue
• Select all songs of the just queued album
• Drag them to the end of the queue

Expected Behaviour

• The songs should be moved to the end of the queue

Observed Behaviour

• The songs disappear completely

[wickeddoc]

I can confirm that this problem occurs on the Linux client as well.