There are two ways to see a post, within Feed and Permalink (a post's details page, where you can see all comments). The composer and comments en each have inconsistent visual styling, features and behavior. We could speculate on why, but it's likely due to these different reasons: different user needs, varying engagement metrics per surface, discrepancy in team's investment.

When I set to work on any new space, I do a thorough audit on all platforms (iOS shown here), and gather data on the usage and performance of every component within it.

Beyond pushing for unification and consistency for all composers across surfaces and platforms, some standout features that could use a redesign were:

Limited space for text as you type, space being misused by tools
Inconsistent location and behavior for tools/attachments (photo, gif, stickers)
Lack of visual hierarchy between selected tools and send button
Send button states could be improved
No space or extensibility for future composer tools (audio, avatars)

Khabar Application