I had a Teams meeting with multiple people (~20-30 people) who joined. For the meeting (I created), I shared my screen and chose the PowerPoint file that I had opened to share. Everyone could see the PowerPoint File, but when I entered Presentation Mode it still showed the main PowerPoint editor screen on everyone else's screen but mine. I was in Presentation mode, but no one else was. I had practiced this multiple times with other people previous to the meeting and they all saw the presentation mode with out any issues. Do you have any idea why this wasn't working for me with this meeting?