Filament: Loading Indicator on Live Fields for Slow Network

All you need to do is add a ->hint() with one of the Filament components inside, rendered as Blade string.

use Illuminate\Support\HtmlString;
use Illuminate\Support\Facades\Blade;
 
// ...
 
return $form
    ->schema([
        DatePicker::make('date')
            ->native(false)
            // ... more methods
            ->hint(new HtmlString(Blade::render('<x-filament::loading-indicator class="h-5 w-5" wire:loading wire:target="data.date" />')))
            ->live(),

Then, whatever other fields are loaded when data is chosen, will show the indicator until they're fully loaded.

You can find more Filament components in the official documentation.