@AGRevok
And what is that?

https://www.windy.com/?gfs,300h,2019-07-28-21,63.549,33.574,3,i:gh

11D9ED73-7D02-41F3-A8DD-4A3109B6A4A8.jpeg

However I don’t think that showing meridian flow from polar regions to tropical areas will really convince climate change deniers.
Don’t mix up climatology and meteorology.

I agree with @siim there is NO BUG with jet-stream display on Windy.