Dragging routes in Mapquest

[sneas]

I am having trouble using the new Mapquest website with Vivaldi (www.mapquest.com)

Most functions seem to work properly, but dragging a route to edit it is not working.
When I move the mouse over the route, I get the popup message "adjust route by dragging it". It allows me to drag the route, and it highlights the modified route, so it looks like it is going to work.
Then as soon as a release the mouse button, the original route and the modified route disappear from the map. I can't get the route to display back on the map without refreshing the page.

Does anyone else have this trouble, or any solution?

Windows 10/ Vivaldi 1.5.658.44