Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hello TimCheek,
Thanks for posting your concerns in the forum. Right now, multiple windows are not supported in Microsoft Teams. I think your workaround to open Teams via different browsers is a good idea.
Furthermore, I have searched in Teams UserVoice forum and found many same feature requests. Please click Vote button to submit feedback in this most voted link: allow multiple windows in teams or be able to "pop out" the chat window. Our relevant team will develop new features based on the most voted feedback. We will keep working to improve the user experience.
Your understanding and cooperation would be highly appreciated.
Regards,
Rick