Posts not prepending to channel

Summary

Posts not prepending to channel when made from Composer

Steps to reproduce

Make a post from composer when on channel - you need to refresh

Platform information

Firefox / Ubuntu

What is the current bug behavior?

Post doesn't appear

What is the expected correct behavior?

The post should appear, possibly below pinned posts?

Relevant logs and/or screenshots

(Paste any relevant logs - please use code blocks (```) to format console output, logs, and code as it's very hard to read otherwise.)

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)