Can no longer ALT+arrows to move lines up/down in Vim mode

Edit: ok, I see it still works in Insert mode. It would be nice if it still worked in Normal mode, but it's not as urgent an issue for me now. (It would be even better if it used ALT+j/k in Normal mode...)

It looks like additional functionality has been removed from Vim mode. I used to be able to ALT+arrow keys to move lines up and down in Vim mode as I could in default mode. Now it doesn't appear to work. I tried ALT+j/k to see if it had been switched to something that better mapped to Vim keys, but that doesn't work either. It still works in default mode, though. This key combination doesn't appear to do anything else in Vim mode, so I don't see why it can't stay.