Alright, look, I promise to get to the rest of your post later when I can, but for now while I'm on break I've only time to address one here and it's the one that's puzzling me most because clearly our experience with the context menu are being completely different for some reason :
If I scroll to an option, look away, then look back, the option remains. It remains if I look at a different, 3 option object (including tables). it even remains selected if I look at 4 option object, such as notebooks. It does, indeed, reset when I look at a 2 option object, in this case drive boxes. I scroll again, and this time rather than looking around, I spam E and collect everything: once again, the option remains selected unless I look at drive boxes.
I have to point out this is 0.8.0, rather than 0.8.2, as it is what I had immediately available, so I can't rule out something having happened since that would disrupt this behavior.