Hello,
I don't know whether this is a bug or a feature not implemented yet: if the latter, my apologies in advance.
In the layers panel, I found that if I drag a layer onto the basket icon, the layer is trashed, but if I drag it onto the "new layer" icon, nothing happens, while I would expect a duplicate layer to be created.
The same for the mask icon, nothing happens, while I would expect a new mask to be created, around the non-transparent pixels of that layer.
Thank you for your consideration!