ColumnSpan not working at all

class Dashboard extends \Filament\Pages\Dashboard
{
    public function getColumns(): int|string|array
    {
        return 12;
    }

    public function getWidgets(): array
    {
        return [
            WeatherWidget::class,
            ClockWidget::class,
            LinkWidget::class,
        ];
    }
}

class Dashboard extends \Filament\Pages\Dashboard
{
    public function getColumns(): int|string|array
    {
        return 12;
    }

    public function getWidgets(): array
    {
        return [
            WeatherWidget::class,
            ClockWidget::class,
            LinkWidget::class,
        ];
    }
}

<?php

namespace App\Filament\Widgets;

use App\Cache\WeatherCache;
use Filament\Widgets\Widget;
use Illuminate\Support\Carbon;
use Illuminate\Contracts\View\View;
use App\Domain\Widget\Actions\GetWeather;
use App\Domain\Widget\Actions\GetForecast;

class WeatherWidget extends Widget
{
    public array $data;

    protected int | string | array $columnSpan = 'full';

    protected static string $view = 'filament.widgets.weather';

    public function render(): View
    {

        return view(static::$view, $this->getViewData());
    }

    public function mount(): void
    {
        $this->data = WeatherCache::get(update: true);
    }
}

<?php

namespace App\Filament\Widgets;

use App\Cache\WeatherCache;
use Filament\Widgets\Widget;
use Illuminate\Support\Carbon;
use Illuminate\Contracts\View\View;
use App\Domain\Widget\Actions\GetWeather;
use App\Domain\Widget\Actions\GetForecast;

class WeatherWidget extends Widget
{
    public array $data;

    protected int | string | array $columnSpan = 'full';

    protected static string $view = 'filament.widgets.weather';

    public function render(): View
    {

        return view(static::$view, $this->getViewData());
    }

    public function mount(): void
    {
        $this->data = WeatherCache::get(update: true);
    }
}