Signal drops PNG transparency for profile picture

[yaomtc]

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
• This isn't a feature request or a discussion topic

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Bug description

Uploading a PNG with a transparent background as a profile picture results in an image with a black background.

Steps to reproduce

• Get a PNG that has a transparent background.
• Tap your icon to get to Settings.
• Tap your icon again.
• Tap your icon a third time, and choose the aforementioned PNG file.

Actual result: A black background is added to the PNG file.
Expected result: The PNG file is displayed with a transparent background as intended.

Screenshots

The original file:

The file on my desktop before sending it to my phone:

The file being cropped against black, for some reason:

The resulting image:

Device info

Device: Motorola Moto X4
Android version: 9.0
Signal version: 4.41.5

[alan-signal]

Avatars have always been jpegs (as far as I can see), so they have never supported transparency.

Therefore this is a feature request rather than a bug. Please make feature requests on the forum https://community.signalusers.org.

However, if you feel it did work at some point in time "Signal drops PNG transparency" please provide more information.

[yaomtc]

By "dropped" I meant "removed the transparency of the image", not "it supported transparency and now it doesn't". I did not know whether this worked before, so I wasn't sure if it was a bug. Since I now know it converts everything to JPEG, I'll go make a request. Thanks.