I, too, have noticed this. Isolines do not "stick".
And to answer the question on layer, my default view is Wind.

Not sure if this data is stored with cookies or not, but I also notice it in the app on my phone. I use a Pixel 7 pro if that helps, so Android.
PC web use various between Chrome and Vivaldi. I experience it on both browsers.

Hope this info helps.
Bill

Liking the Radar+ layer.
15 day forecast is interesting.
Just discovered where the planner is. Need to play with it, but I like the details provided.

Excellent development.
Cheers!

I, too, have noticed this. Isolines do not "stick".
And to answer the question on layer, my default view is Wind.

Not sure if this data is stored with cookies or not, but I also notice it in the app on my phone. I use a Pixel 7 pro if that helps, so Android.
PC web use various between Chrome and Vivaldi. I experience it on both browsers.

Hope this info helps.
Bill