3c6318e831
There was a regression in case two models inherited the same parent, and one contained a foreign key to other. When select_related travelled the foreign key the other model reused the parent join made by the first model. This was likely caused by Query.join_parent_model() addition in commit 68985db48212c701a3d975636123a5d79bdc006f. Thanks to Trac alias loic84 for report & tests.
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