Empty image alt-text & missing alt attribute on product detail page

[johnny-longneck]

Preconditions

1. PHP 7
2. M2.1.6

Steps to reproduce

1. Import product images and image labels via csv.

Expected result

1. Backend: Image "alt-text" field is being filled by the imported image label
2. Frontend: Product Detail Page Images have alt attribute

Actual result

1. Backend alt text field is empty, even though label was imported and can be seen on product list page as alt attribute
2. Frontend: Product Detail Page is missing alt attribute on image fields

This may sound like a "no big deal" but my boss came up this morning with "All our images are removed from google image search"

[timste]

in category listing M2 use the name from the product for the alt tag. in product detail view, when you dont set the alt text is the alt tag missing. in M1 was the default alt text the product name.

[johnny-longneck]

Furthermore it seems the alt-text is saved in "additional_image_label" instead of base_image_label for example

[magento-engcom-team]

@johnny-longneck, thank you for your report.
We've created internal ticket(s) MAGETWO-80444 to track progress on the issue.