My company recently made the full switch from Skype for Business to Microsoft Teams. For calls, it’s fine and mostly feels the same if not better since I prefer the aesthetic of Teams. The one thing that drives me insane about Teams is that I can’t have more than one chat window.
This is particularly irksome when I’m on a call where somebody’s screensharing, and I want to have a side-chat or ask/answer a question from somebody outside the call. As soon as you open another chat, the screenshare is reduced to an unusably-small size, and switching back makes the other chat go away. There’s a similar problem with managing multiple conversations or team chats at the same time.
Here’s an easy workaround: use the Teams web client. Just login at teams.microsoft.com, and you can have as many windows as you want. This works pretty well for side-chats on a conference call, for example if you want to have a parallel internal conversation while speaking to a client or customer. If you have frequent contacts, you can even create bookmarks to specific conversations.