I added Revolut and transferred a small sum ($300) to my UK bank as a test. It was a bit more expensive than wise would be, but it worked. It took 2 days to do the small value transfer as verification, then 10 days for vanguard to allow withdrawals, then another couple of days for the transfer to go through.
I'll trying adding wise to vanguard periodically, as it's clearly a bug with adding wise, not with using wise once added. I could use the paper form to add wise to vanguard, but that seems a lot of hassle given revolut works. (I could transfer from revolut to wise in USD if the exchange rate is better.)