在聊天中上传图片，使用 s3 CDN 时无法正常显示

[tgxworld (Alan Tan)]

@w.h

it seems like the Upload thumbnail url returned from the API is the S3 url while the Upload url has the CDN url.

This is indeed weird that we are not using the CDN url. @martin / @renato I’ve tagged this member-experience and pri-medium for someone to investigate.