My Mac does not do that when dragging a clip to the bin. Only get the three green 'recycle' arrows in a circle. The same if I hold command, alt or control.
I can right click on a clip after selecting it and copy, but no option to paste in the bin.
Those option are not yet available on Mac I suppose.
Have you ever seen the green recycle icon?
Selecting a blue area almost works the same with the exception, for me, the blue does not show until you release the shift button, selection a small region of a clip or multiple clips. But does still do the job.
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Is there a reason the dual preview option is not available now? The check box is there but grayed out.
I am not a big fan of the new default layout either. Almost impossible to have a window undocked for use with the controls now being to the side of the preview. I make it so i have to undock all three, bin, clip and sequence windows to use them side by side.