Issue with Spark Team Billing without trial

I have found that it is impossible for a user to register if I only have team plans, no free plan, and no trial days.

Here is my SparkServiceProvider booted method:

''' public function booted() { Spark::useStripe();

    Spark::teamPlan('Startup', 'test-startup')
        ->price(49)
        ->maxTeams(1)
        ->features([
            'First', 'Second', 'Third'
        ]);

    Spark::teamPlan('Small Business', 'test-smallbusiness')
        ->price(69)
        ->maxTeams(1)
        ->features([
            'First', 'Second', 'Third'
        ]);

    Spark::teamPlan('Enterprise', 'test-enterprise')
        ->price(89)
        ->maxTeams(1)
        ->features([
            'First', 'Second', 'Third'
        ]);
}

'''

When I go to the registration page, there are no plans visible, just the standard registration form. When I try to register, it fails because there is no plan selected. In the console, I get:

''' Uncaught TypeError: Cannot read property 'price' of null '''

''' if (!Spark.cardUpFront || this.selectedPlan.price == 0) { return this.sendRegistration(); } '''

It looks like app.js is trying to read the price of the selected plan, but no plans appear so there cannot be a selected plan. Is this a bug or am I missing something? Why do teamPlans not show when a user is trying to register?