#30325: Inconsistent count() behaviour on reverse relations in ManyToManyFields
with custom model manager
-------------------------------------+-------------------------------------
     Reporter:  Tobias Kunze         |                    Owner:  nobody
         Type:  Bug                  |                   Status:  new
    Component:  Database layer       |                  Version:  2.2
  (models, ORM)                      |
     Severity:  Release blocker      |               Resolution:
     Keywords:                       |             Triage Stage:  Accepted
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Marten Kenbeek):

 Regression caused by [changeset:"1299421cadc4fcf63585f2f88337078e43e660e0"
 1299421] (#29725). `.count()` and `.exists()` on a many-to-many relation
 now use the through model's base manager instead of the related model's
 default manager.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30325#comment:6>
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