Failure to save upon renaming a product in same session

[yileifeng]

Description

When renaming a product on dev, proceeding to the main editor and attempting a save will return a 400 error in the POST request. This seems to only be the case when trying to save in the same session that the product was renamed in.

Steps to reproduce

1. Load a product on the metadata page on dev
2. Rename the product
3. Proceed to the main editor page + make a change
4. Attempt a save - notice a 400 error returned in console + save indicator loops