Using a Mac, the left-alt-2 key cannot be used to get the '@' character in the text fields in Teams for Mac.
Please allow Mac users to obtain the @ character using left-alt/option-2, as all other applications for MacOS do. Now, only right-alt/option-2 works.
Erik Hausen commented
This has to be corrected! Left Alt + 2 is probably the most common way to type @ in a mac. It was very confusing to notice that suddenly i jumped to a new screen instead of typing @!