When uploading files, don't just show spinner animation - show upload progress bar.
Christopher Findley commented
Hi 2017 you had a spinner? In 2020 I get nothing. I have to sit and wonder if Teams locked up. Then it magically appears. Sure hope this gets implemented 'soon'. /s
Mark Noble commented
Currently there is a spinner showing that... something might be happening... but a progress bar would make more sense for an upload.