Magento2: Media gallery thumbnails stretched when image is horizontal ratio

[NickdeK]

When using images with a horizontal ratio, and prevent the image generation from adding white space to the images, the thumbnail images in the gallery come out pixelated on the product page.

Preconditions (*)

1. Magento 2.3.2
2. <var name="product_image_white_borders">0</var> in the view.xml of a theme (including the luma theme)

Steps to reproduce (*)

1. Have a product with images that have a horizontal ratio (the width is bigger than the height)
2. Make sure that product_image_white_borders is set to 0 in the view.xml of the activated theme
3. If cache images are already created remove the pub/media/catalog/product/cache/ folder.

Expected result (*)

1. Thumbnail images to be shown crisp and sharp

Actual result (*)

1. Thumbnail images are stretched and therefor pixelated (see screenshot below)

[m2-assistant[bot]]

Hi @NickdeK. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• [x] Summary of the issue
• [x] Information on your environment
• [x] Steps to reproduce
• [x] Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

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@NickdeK do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• [x] yes
• [ ] no

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[m2-assistant[bot]]

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[magento-engcom-team]

:white_check_mark: Confirmed by @engcom-Alfa
Thank you for verifying the issue. Based on the provided information internal tickets MC-18589 were created

Issue Available: @engcom-Alfa, _You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself._

[erfanimani]

Same is happening for the mini cart. If product_image_white_borders is false, the product image is stretched until it fits inside a square (75px x 75px for the Luma theme).

@NickdeK I'm just wondering what's the expected result exactly? For the image to be zoomed-in and cropped until it fits the specified width and hight as declared in view.xml?

[NickdeK]

@erfanimani I don't think the default behaviour should be to crop the image; essential product information may be lost depending on the content. My current fix is to just resize the image with CSS to fit the container and align it in the center/middle of the container.

[magento-engcom-team]

Hi @NickdeK, @NickdeK.

Thank you for your report and collaboration!

The issue was fixed by @NickdeK in https://github.com/magento/magento2/pull/23884
The fix will be available with the upcoming 2.3.4 release.

[OnYXCoding]

Issue also exists in minicart. Sadly, the fix #23884 doesn't work for the minicart.