Works here. The default keyboard shortcut (in Preferences > Sorter) is Shift-Option-Command-F12.
On my ModBook (custom tablet based on MacBook) with an Apple wireless keyboard I have to also press the “fn” key as part of that shortcut, which I do by using my little finger to simultaneously press ‘Shift’ and ‘fn’ – a bit of finger gymnastics.
But when the shortcut is properly executed on selected text the capture to Inbox is successful.
My problem continues no matter what shortcut combination I use or how careful I am while pressing the key combination As I said in my previous post, you never know when it is going to work. It is just random. I also tried the fn trick you mention but still no luck.
I guess I will have to drag and drop the files to the sorter which I don’t like as a keyboard person.