It would be nice to be able to click/drag the sidebar (where channels are) and resize it/ hide it if desired.

Resizing it and having a channel name abbreviated with ... could make sense;

ex: Town Square once it starts getting cut off would become Tow... (depending on how small you make the sidebar). Then if you go over far enough it snaps into a hidden position

I consider it unacceptable that I can't choose to disable having my words replaced with emoji, without also having to give up on EVERY SINGLE post formatting feature. I want to be able to use post formatting, just NOT have any emoji appear without me explicitly choosing to insert them.

There should be an option to show the nickname on each line, when using compact mode. As a long-time IRC user, I expect to have the name repeated on each line.
This is specially annoying when the "New Messages" marker shows, where it should ALWAYS show the name in the line following the marker.

Add to jira plugin features to notify about new comments, description changes, attachments changes in a ticket.

Just like we have tumbnails on pictures. helping us identify what we are looking for without having to open the preview tool.
It would be great if we could have thumbnails on videos too.

I would like to view multiple rooms in separate windows.

If a user misses replying to a thread in a channel and instead replies directly to the channel, this message is not part of the thread that it was intended to be and the conversation is not clear.

There should be a way for a user or channel admin to move a message to the intended thread inside the channel and keep it inline with the on-going threaded conversation (since everything is timestamped this seems possible).

This would clean up the conversations and mistakes that users will make.

The problem I am having is that in some channels when users are using tons of animated emojis, I am seeing my CPU sit at >=30%. If I then switch to a more static channel, the CPU usage drops off the top of the list.

The feature I would love is to either:
* Have the ability to disable the rendering of animated emojis (or gifs?)
* Or to have the ability to hide posts

Currently I have to make sure never to leave a heavy animated channel as my active channel.

Use local notifications when the app is running or in background. I know that encrypted push notifications are supported when using the enterprise version, but it would be very handy if the app would support local notifications when running in background or foreground for new messages.
This creates the ability to use the app without sending data around the world.

A toggle option so that threads appear as "N comments" and open in the side-panel, so they do not interrupt the main flow of the channel, and you can follow each thread mode easily.

The same menu that shows when clicking the "..." icon to the right, including reactions and reply, should appear when right-clicking on any given message.

It is a major usability inconvenient when using a large screen, to have to move the mouse all the way to the right edge of the screen in order to click that.

It appears that mattermost will mark a user as Away while they're still actively working on their computers. I suggest an option to allow a users status to be shown as "Online" while they're logged into their computer. Just because a user doesn't have the app in focus doesn't mean they're not available.

Also, is it possible to show users who are logged in from a mobile device as active on mobile? Hipchat had this feature. Currently Mattermost marks users as offline even if a user is available on their mobile device.

When users have their mattermost window open all the time, animated emoji that are endlessly looping can be very distracting and annoying. If they paused after looping a set number of times, it would greatly improve the user experience for me.

Having secure "at rest" data on the server is very important for data safety, especially due to the new privacy laws within the European Union. Nextcloud for example offers an easy to use server side encryption for its services within the settings. No special software is neesed.

Our organisation really wishes an easy to setup server side encryption within the dashboard.

allow message sending with siri and automation with shortcuts app
https://developer.apple.com/documentation/sirikit/messaging

It would be great if I can enable the option to show the entire message in notifications. Currently only the beginning of the message is passed to notification system.