It got released late tonight and we didn't notice that there was a bit of code missing which means there was no confirmation step … and it was accidentally placed as the default verb (which should be "Set as destination"). By the time we realized the relevant coder (who had been working for 30 of the last 48 hours) was (thankfully) asleep.
So, someone else is trying to fix it now. Hopefully that will work and it'll be fixed shortly, but it might have to wait until the morning.