Receive 422 errors on certain image uploads to Mastodon

[ehashman]

Expected behavior

When I upload an image captured on my phone camera, it succeeds.

Actual behavior

Image upload immediately fails with "Error 422".

Steps to reproduce

A photo that produces the error is attached. Attempt to upload it to a Mastodon instance with version 2.4.3. I don't know if the GitHub upload will work for reproducing since it strips EXIF data but I'll test it.

Before my Mastodon instance was upgraded to 2.4.3 I had no issues with photo uploads on Mastodon with Twidere.

Extra info

Android version: 6.0.1 (BlackBerry DTEK60)

Network type:

• Cellular
• Wi-Fi

App version: 3.7.3

Build variant:

• Google
• F-Droid

Micro-blogging service:

• Twitter
• Fanfou
• GNU Social / StatusNet
• Mastodon

App settings:

• Custom API
• Custom consumer key/secrets
• Official keys
• Using Thumbor
• Connected through proxy
• Media preview enabled

[Xefir]

Mastodon 2.4.3 and after limit the image upload to 8mo and restrict the upload to image below 1280x1280 in size.
All image above this will result on a 422 HTTP code.

[ehashman]

Why does the upload succeed on web? Auto resizing?