Mobile device: Motorola One Vision, Android 10.
When using the android with the Display-setting "display size" set to small (Android-Settings -> Display -> Advanded -> Display size) the app looks like that:
The bottom navigation bar is fixed, so I can't select any other weather model or can compare the different models. To change the weather models I have to switch to landscape mode.
When using the display size set to "standard" (or using windy.com in chrome) everything looks like it should:
On my old phone (Xiaomi Mi A1) the app worked flawlessly, even with the display setting "display size = small".