In link to this [issue](https://github.com/mattermost/mattermost-server/issues/11703), parameters such like the `post_id` may be required twice in the paramters and in the body of a request. Keeping only one would be preferable

I see the language dic (pl-PL.dic) file in simple-spell-checker-0.9.8.tgz

(https://registry.npmjs.org/simple-spellchecker/-/simple-spellchecker-0.9.8.tgz)

but no action Polish (Polski) in Spelling Languages in app.

Please add polish language spell check function in app.

Unless you happen to be Chinese the pinned messages on the right are likely the last thing you will read.

The effective way to pin messages is to stack pinned messages on top.

The metaphor is that the message is pinned to the top of viewport and does not scroll away as other messages do.

- display pinned messages by default until the user hides them (and remember the hidden state until new message is pinned)
- display the pin icon in different color/style when pinned messages exist

Hello,

I am using Mattermost Android app to receive notification and messages. But it is very confusing to distinguish between other notification and Mattermost notification.

It takes the default notification tone of mobile and desktop.

Please provide the option to change the notification sound or if there is any method to do that then please let me know.

Keycloak is one of the most popular IDP providers used.

It would be great it Keycloak could be supported as simple as other authentication providers based on the same technology.

We use CiviCRM for our basic admin as a not for profit. The email system in CiviCRM is clunky. Would be great to link Mattermost in some way so we could bypass the CiviCRM email system and just use Mattermost for most of our team communications.

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 an server wide option to forbid renaming user names. It might be a security problem, if someone claims abandoned user name (/account name).

This is a really useful feature in Slack when you realize a topic deserves a dedicated channel, but want the DM history to become a part of it:

https://get.slack.help/hc/en-us/articles/217555437-Move-group-DMs-to-a-private-channel

On the [...] button on the right side of a message, there's a tooltip displaying the text "More Actions". When I click on this button, the menu pops up and then the tooltip appears, blocking the "Edit" menu item. The tooltip should never be allowed to pop up if the menu is already open.

Firefox, Mattermost Version: 5.6.2

people are often sloppy in using answers to messages and just type it to the channel when it should be an answer to the message above.
I propose a button visible to the author and admins that allows to transform a message into an answer to the message above.
I hope it'll help to create more consistency in the usage of the answer/thread feature.

Currently there seems to be only a global configuration option whether to allow email invites to be sent to users. When this is turned on, everyone can send email invites. I'd like to be able to send email invites as admin without allowing all members to send email invites. Currently I have to turn the feature on, invite someone, then turn it off again.

When user invites someone, the email need checking existed before sending. Link to github issue https://github.com/mattermost/mattermost-server/issues/11830

https://github.com/mattermost/mattermost-server/issues/11896

Change attachments for adaptive cards, is more flexible.

https://adaptivecards.io/samples/InputForm.html