@David-Ryzec-3
I've found the root of the issue. I use leaflet 1.9 in other pages of our vue site and there was a conflict with leaflet.css file from 1.9. When I remove leaflet.css includes on other pages windy map starts works well.
Is there any way to use leaflet 1.9 for whole site and 1.4 (w/o leaflet.css) for a page with windy map?
Thanks.