They probably expected Work From Home to flop everywhere outside the US since the urban-pop sound isn't really popular anywhere else. But now that it's actually doing well overseas, they'd be pretty dumb to let that go to waste and release another single before Work From Home has peaked. Why get 1 hit in Europe when you can easily get 2?
Then again, Maverick and Epic (probably mostly Maverick though

) have done an amazing job so far this era, so I trust that they have good reasons for whatever they choose to do.