Quality drops and transparency replaced with solid color when uploading .png with transparent background

[MichaelJamesParsons]

Preconditions

1. Magento 2.1.7
2. PHP 7.1

Steps to reproduce

1. Navigate to "add new CMS page" view of the admin panel
2. Using the WYSIWYG editor, click "insert/edit image"
3. Click the "browse" button
4. Upload an image with colored text over a transparent background
5. Insert the image and save

Expected result

1. The image should be inserted into the CMS page without any loss in quality, and should keep a transparent background.

Actual result

1. The image is inserted into the CMS page, but there is a very noticeable loss in quality (the colored portions of the image look rough). All transparent layers are replaced with solid black.

Original Transparent Image

Post-Upload Image

Related Issues

#5401
#2312

Attempts to fix

#7307

[orlangur]

Did mentioned fix solve your problem in develop after all?

[MichaelJamesParsons]

@orlangur Version 2.1.7 does not include the fix.

Magento 2.1.7

Gd2.php Line 349
ImageMagick.php Line 171

vs

Development

Gd2.php Line 349
ImageMagick.php Line 171

I am hesitant to use the dev branch in production. Are there any plans in the near future to include that fix in 2.1.*?

[orlangur]

@MichaelJamesParsons, yeah, that's why I was asking about develop branch.

The fix was backported to 2.1.x in #9662 and will be released in 2.1.8 😉

[MichaelJamesParsons]

@orlangur Is there an official release date for 2.1.8?

[orlangur]

Yesterday :)

[magento-engcom-team]

@MichaelJamesParsons, thank you for your report.
The fix for this issue is already available in the 2.1, 2.2 and develop branches.