Support Gitea's OAuth2 provider as an authentication source.

Currently, the team edition only supports GitLab as an OAuth2 source. GitLab is pretty heavyweight and many people prefer other software for a variety of reasons.

Gitea (https://gitea.io/en-us/) is a really nice open source, community supported Git server. They recently added support for acting as an OAuth2 provider (see https://docs.gitea.io/en-us/oauth2-provider/ for documentation). It would be great if Mattermost would support Gitea as an OAuth2 provider.

The same way we can send messages, we should be able to send voice messages.

It should be as simple as click "add voice", record what you want, press send and it's made available on the server for others to listen.

It should be supported by browser and mobile client apps.

for the default search backend (sql), search results are capped at 100!

you can verify this by loading jquery and doing:

$('.search-item__container').length;

you can see that paging isn't supported:

https://github.com/mattermost/mattermost-server/blob/master/app/post.go#L821

and the sql uses `LIMIT 100`:

https://github.com/mattermost/mattermost-server/blob/master/store/sqlstore/post_store.go#L834

i know this isn't an issue in enterprise because you're using elasticsearch, but please either bring elasticsearch to team edition or fix the default search backend. 100 results is sad :(

A user should be able to easily see & search the list of all channels they have joined and can join. I'm seeing a number of duplicate channels created across teams because the user did not know it existed in another location.

In a thread, because we cant create subthreads, the comment menu should have a new item called "quote reply".

"Quote Reply" should allow the user to add a new comment with reference from the comment he is replying.

A : I like cars.
A : Wanna go for pizza? <-- "Quote Reply"
B : I like Ferrari.
B : "Wanna go for pizza?"
Yes. Pizza is a great idea.

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.

Change attachments for adaptive cards, is more flexible.

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

this is the opposite of the current setting:
ENTER inserts a new line and CTRL+ENTER submits the message.

As of now, a change of theme on one device is automatically synched to all other devices.

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.

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.

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'm hosting a single team installation for 2 local charities (each has their own team). It would be great to be able to set a separate storage limit per team. In small situations like this it's not necessary to run 2 instances of mattermost. but this setup is only manageable if we can specify a limit per team.

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.

In some channels some messages are ‘must read’...
An option ‘I have read this one’ would be great then.
It would also be nice to be able to reorder the pinned posts.

The installation should be only depending on a ftp-access to a hosted server storing data in flat files. Second best would be mysql connection.