Steps to reproduce:

1. Create Foo folder under Ibexa Digital Experience Platform content.
2. Move Foo under Ibexa Platform.
3. Visit /foo and /ez-platform/foo URLs.
4. Create an Article under Ibexa Digital Experience Platform with title set to Foo.
5. Access /foo.

Result:
You will be redirected to the Foo folder.

Expected result:
You should see Foo article.

Note:
After clearing the SPI cache proper content is shown.