[Bug]: Properly Show Discord Attachments

[olivertzeng]

Preflight Checklist

• [X] I have checked the issue tracker for issues that may be similar to mine.
• [X] I have checked whether this issue can be reproduced on another setup (e.g. other operating system or browser version/channel)
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Description

OK LOL DISCORD

Steps to Reproduce

sudo open-xdg https://cdn.discord.app/XXXXXXXXXXXXXXXXXXX

Actual result

Blank

Expected result

Show a pic

Browser version

the latest

Browser build date

the latest

Browser channel

Nightly

Other information