Test not working together

Hi, the second test below is only successful when it run separately. Why is this?

<?php

use Laracasts\TestDummy\Factory;
use Laracasts\TestDummy\DbTestCase;

class OrganisationObserverTest extends DbTestCase {


    /** @test */
    public function it_deactivates_custom_questions_on_organisation_deactivation()
    {
        $organisation = Factory::create('App\Models\Organisation');
        $location = Factory::create('App\Models\Location',[
            'organisation_id' => $organisation->id
        ]);
        $location2 = Factory::create('App\Models\Location',[
            'organisation_id' => $organisation->id
        ]);
        $question = Factory::create('App\Models\Question');
        $question2 = Factory::create('App\Models\Question');
        
        $organisation->locations()->saveMany([$location,$location2]);
        $location->questions()->attach($question->id);
        $location2->questions()->attach($question2->id);
        $organisation->active = false;
        $organisation->save();
        
        $this->assertFalse($question->fresh()->active);
        $this->assertFalse($question2->fresh()->active);
        
    }

    /** @test */
    public function it_activates_custom_questions_on_organisation_activation()
    {
        $organisation = Factory::create('App\Models\Organisation',[
            'active' => false
        ]);

        $location = Factory::create('App\Models\Location',[
            'organisation_id' => $organisation->id
        ]);
        $location2 = Factory::create('App\Models\Location',[
            'organisation_id' => $organisation->id
        ]);
        $question = Factory::create('App\Models\Question',[
            'active' => false
        ]);
        $question2 = Factory::create('App\Models\Question',[
            'active' => false
        ]);
        
        $organisation->locations()->saveMany([$location,$location2]);
        $location->questions()->attach($question->id);
        $location2->questions()->attach($question2->id);

        $organisation->active = true;
        $organisation->save();

        $this->assertTrue($question->fresh()->active);
        $this->assertTrue($question2->fresh()->active);
        
    }

}

<?php

namespace App\Models\Observers;

class OrganisationObserver {

    public function updating($organisation)
    {
        $current = $organisation->active;
        $previous = $organisation->getOriginal()['active'];
        $hasDeactivated = $current === false && $previous === true;
        $hasActivated = $current === true && $previous === false;

        if($hasDeactivated){
            $this->setQuestionActive($organisation,false);
        }

        if($hasActivated){
            $this->setQuestionActive($organisation,true);
        }
    }

    private function setQuestionActive($organisation,$isActive){
        $organisation->load(['locations.questions' => function ($q) use ( &$questions,$isActive ) {
            $questions = $q->where('default','=','false')->update(['active' => $isActive]);
        }]);
    }

}