PNG transparency problem since 6.3.0

[phunehehe]

Thumbor request URL

http://thumbor-vbox/unsafe/fit-in/60x60/filters:no_upscale()/http://fake.net/cms/app/f/c/sg.png

Expected behaviour

Here's the original:

The image should be scaled down:

Actual behaviour

The image appears mostly transparent, except around the edges:

This seems to have started since 6.3.0. 6.2.1 doesn't have the issue.

Operating system

NixOS

Your thumbor.conf

SECURITY_KEY = 'dummy'
ALLOW_UNSAFE_URL = True
LOADER = 'thumbor.loaders.http_loader'
STORAGE = 'thumbor.storages.no_storage'
THUMBOR_LOG_FORMAT = '%(asctime)s %(name)s:%(levelname)s %(message)s'
THUMBOR_LOG_DATE_FORMAT = '%Y-%m-%d %H:%M:%S %s'
QUALITY = 90
OPTIMIZERS = [
    'thumbor.optimizers.jpegtran'
]
JPEGTRAN_PATH = '/nix/store/4ss2dmv9igk3z5xv88la9f38pzcdi2l6-mozjpeg-3.1/bin/jpegtran'

[heynemann]

Is this still happening?

[phunehehe]

I just tried using 8cebe12 (the tip of master as of now). It's still the same.

[phunehehe]

it seems like the fix is just waiting to be merged: #988

[phunehehe]

\o/