I've left Candlekeep, picked up Xvar and Montaron, and traveled east to the map with the road markers pointing to the Friendly Arm and Beregost.
I've walked my party to the northern edge of the map and clicked at the edge, with my cursor showing the wheel and arrow icon. This takes me to the world map, where the F.A. inn is shown with a shield and crossed swords over it and its name in blue.
I click on the inn, highlighting it. Then, I click on the Travel button, and am am immediately returned to the map with the two road markers.
I've tried leaving the map at various different points, to no avail.
I can travel to and from Beregost with no problem.