Transparent Png Doesn't Work (Even With Files)

[sglbl]

Using a supported version?

• [X] I have searched searched open and closed issues for duplicates.
• [X] I am using Signal-Desktop as provided by the Signal team, not a 3rd-party package.

Overall summary

When an user sends transparent png to another person, png automatically converts with a black background. When image is selected as a file, it's the same.

Steps to reproduce

1. Send a trasnparent image to somebody.
2. Check the image

Expected result

File shouldn't be changed.

Actual result

File changes.

Screenshots

No response

Signal version

7.14.0

Operating system

Windows 11

Version of Signal on your phone

No response

Link to debug log

No response