Our Guest users cannot log in into Teams on some iOS devices, however on Android the same account works perfectly. We tried different ideas and on some iOS devices access is given, on some not. It doesn't depend on IOS version.
Error message: Your license doesn't include access to Microsoft Teams, please contact your Admin

If you set the notifications for trending posts to "only show in feed", a e-mail is also generated. This is not the expected behavior.

Windows 7 with all updates. Desktop Teams 1.2.00.21068 (64-bit) - the latest available for me at this moment. High CPU and memory usage (see attached image). Teams window is not active, no chats and other activity. It happens sometimes, I can't find any pattern. The only way is to kill processes. Closing the app just closes that process with high memory usage.

Installed Memory - 8 GB, Processor - Intel Core i5-2320

Notification is showing on app and device home screen (iPhone 8+) despite there being no notifications when using the desktop app on my laptop.

Android mobile app teams are not working its needs rebooting ans signin up before it will work. And it will only work for a day after that you need to reboot and sign In again for you to use the mobile app

I currently added 4 members to my team, but the issue is that when I open the "People pane" in any of my channels, it only shows 2 people.

Why isn't it possible to add external users to group chat? It's a big step backwards comparing to Skype for Business and it makes life more difficult for companies working with various clients on a daily basis.

Images that are posted in chat are not viewable in their original size within Teams. The viewer opens with a broken link to the image.
Within Teams Windows App
Reproduce:
1. Take a screen shot and paste into the chat window.
2. Click on the image in the chat window.
3. The image does not display in viewer.

Breaks on Windows 10 Teams App
Microsoft Teams Version 1.2.00.17057 (64-bit). It was last updated on 7/1/19.
Worked before but don't know exactly when it stopped working.
This works in the Teams webapp.

1. Create a contact group
2. Click …
3. Click "Add a contact to this group"

Observe that keyboard focus is lost. Instead, it should be transferred to the "Type a name" filed in the modal dialog that appears.

The specifics are related to SRS/MTR room systems.

When one sets up the SAS Lenovo Hub 500 to use SfB and Teams (SfB as default) the on-screen keyboard does not ever appear for starting a new meeting or adding participants in a Teams meeting. The keyboard does appear correctly in SfB meetings.

When one sets the Hub 500 to default to Teams the keyboard did not work either.

The software version is 4.0.85.0

The windows version is 10.0.16299.431

I have two accounts on Teams and I can switch from one to another. After using one for some time and changing back to the other, all conversations of the other had disappeared. Only channels are visible, but not the contents. How can I get the conversations back?

unable to add people from outside the org to team or invite to a meeting. It says "we didn't find a match" and add button is grayed out.

When logging out of the site and logging in again, the dark theme is reset to the default one

When you copy/paste a URL into a chat and then type a "." to end the sentence, the period gets appended to the link.

For example, I typed the following into a message:

----
https://github.com/cristianbote/goober looks interesting. Might still need https://github.com/cristianbote/goober/issues/9.
----

I copied and pasted in the last URL and then typed a "." However, when other users click on that link, it takes them to "https://github.com/cristianbote/goober/issues/9." (with the period added at the end).

It would be helpful if it was smart enough to not include the period.

(This is not an idea, it's a bug report by the way)

It seems that markdown is only recognized when typing everything in a row. Usually I like to type both marks first and then put the code/bold/url etc. inside those quotes. If I do that, Teams won't format the markdown.

This bug also prevents pasting markdown to the chat.

After playing around for a day or so with Teams, I decided to try and convince my office to switch from Slack. My first demonstration of creating channels (after creating multiple ones yesterday) failed as they would disappear immediately after being created. This is in the desktop and web apps in Windows and on Mac. Logging out and back in does not solve the problem. Needless to say, this failure of a demonstration is forcing us to continue using Slack. Maybe we will try again next year.

If a channel are renamed from X to Y and you go into the Files section the the title that are shown is still X and not Y.

Twice in the last week, Teams has stopped sending chat messages. I get "Failed to send" across all devices and internet sources. Everything else on all devices works, both mobile and PC.

Reporting a memory leak bug in TEAMS running inside a browser.
There is a resource leak or infinite loop condition or something. It will gradually escalate to using 99%+ of the CPU and eventually eat up all the memory too. Closing the Teams tab fixes the problem immediately. I’ve been able to reliably reproduce this in Chrome, Edge, and Firefox (haven’t tried in IE or Safari) across three different Windows 10 devices. I don’t need to do anything beyond login to Teams, and it starts to devour resources.