Eager loading not working with particular UUID

I’ve been stuck on the weirdest problem for half a day now. I am using UUID(4) as primary keys on my models. I’ve stumbled on a UUID that seemingly breaks eager loading relationship:

Class User extends Authenticatable {
  // ...
  public function memberships() {
    return $this→hasMany('App\Membership');
  }
}

// this yields nothing even when I KNOW User has memberships associated in db
User::with('memberships')→find('624e114d-d914-4ee6-8bbf-1ee242acdce2');

// ..but skipping the with(..) will yield all user’s memberships for the same User
User::find('624e114d-d914-4ee6-8bbf-1ee242acdce2')→memberships;

Changing to any other UUID makes both examples above work, returning all related models. So it is specifically breaking on this particular ID.

This sounds super ridiculous, but.. What’s going on? (I'm on Laravel 7.2.2 / valet)