We did some tests and were able to replicate what you show on the video. However, this is happening because the queue isn't getting to load properly.
Instead, please try dragging the songs to the queue icon, then wait a couple of seconds for the queue window to appear. You should be able to add all the selected songs, can you confirm if this works for you?
Let us know how this goes.
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thanks for the answer, waiting for the queue view to appear works but is not viable solution to my usecase. The idea behind dragging multiple songs to the queue icon is to not have to leave your current screen / view. This was already possible in the legacy desktop client and it would be nice to see it in the current version as well