Custom product URL don't work for all languages

When adding a custom URL slug to a product for all languages, the shop doesn’t find the product.

How to reproduce:

1. Fresh shop installation. Make sure, there are multiple languages activated.
2. Create a new product named “My Product”. The product appears on the list of products in the frontend and links to /My_Product(correct)
3. Edit the product, go to “Text” and add a new “URL segment”, select “All” for language and enter “new-name” as value. On the lists of products in the frontend, the product now links to /new-name(still correct, that’s what is expected)
4. Click this product to view the product detail page. Now there is an error: Product "new-name" not found

By manually entering the URL /My_Product, the product can still be accessed.

I noticed, that the DB contains by default a URL for each language of the product. Adding the “URL segment” text adds just a row with an empty language ID to the DB.

By specifying a “URL segment” for each language, the problem is solved. It’s just the “All” option that doesn’t work. It seems like there is a priority problem, when fetching the data from the DB.

[aimeos]

The changes will be available in the upcoming 2019.10 releases (ETA: this month)

[aimeos]

Old records are now removed too: https://github.com/aimeos/aimeos-core/commit/859578903112a283a20514b4991fe391ab03c67a