Bi-directional ManyToMany with through gets broken when creating test database

Hi,

I have recently upgraded to sjango 1.8 and I have 2 models with a bi-directional ManyToMany field. It looks like this

class Pizza(Model):

    available_toppings = ManyToManyField('Topping')

class Topping(Model):

   all_pizzas = ManyToManyField(Pizza, through=Pizza.available_stoppings.through, verbose_name='available pizzas')

Everything was fine in django 1.7 but right now when running tests, specifically when creating the test database, I get this exception:

self = <django.db.backends.sqlite3.base.SQLiteCursorWrapper object at 0x7fd24fca4b00>

    def execute(self, query, params=None):

        if params is None:

>           return Database.Cursor.execute(self, query)

E           OperationalError: table "products_pizza_available_toppings" already exists

So it looks like the creation of the test database is trying to re-create the intermediate table for the ManyToMany.

I do not get any exception when running my site.

Does anyone know how can I fix this?

Thank you in advance

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