@Suty Thank you very much. It would be great if you could make this work again. As I have said above, I have been checking this route for a few weeks now, and it's only since I installed a recent update that the bug made itself apparent to me.

@idefix37 thank you for replying. Wow, so it's been a long standing problem.
Interesting though, that I have been watching the weather for this route for a while, but the bug has only shown up since I installed an update.
The route I am creating (not importing), starts in Tonga, has a waypoint near Minerva Reef North a way point called "John's Corner" and NZ.
It repeatedly fails as I cross from West to East Hemisphere.

Here's a copy of my route:
https://www.windy.com/route-planner/boat/-18.6900,-173.9200;-23.3600,-178.5200;-29.8900,172.9600;-35.1800,174.1700?2024100221,-49.055,-6.435,3,i:pressure

I am currently in Tonga, and checking the weather for a route to New Zealand. This is a route from a longitude of -173 to 173, so from the Western Hemisphere to the Eastern Hemisphere.
The Distance and Planning Tool correctly calculates the number of nautical miles, but the actual route used is the long route, around the world the other way! The route is not even displayed, and the forecast is impossible to use.
A few weeks ago it was possible to create this route without any problems, so a recent upgrade has caused the glitch.
I have checked this on both my Android telephone using the App, and on a laptop PC using Firefox.
Please can you urgently fix this.
Many thanks