Me too. No, it doesn't happen in Safe Mode. Galaxy S7 Edge, Oreo. No recent updates. I also have running Call Control in the background. This also happens with Call Control disabled.
After I make a phone call and end the call, Google Maps opens and populates the 'search' dialog box with the phone number just dialed. Then Maps searches for directions to the location. Usually it can't find the location, but occasionally some random (to me) location opens with a pin.
I can't remember adding any apps recently and I don't know what was the last app installed.