When I was voice chatting with my friends, I wanted to screen share a tab in firefox, but I couldn't. It didn't say anything, the only thing I could share was the voice chatting app and my recording software. I was also going to screen share my game so I can show it to my school friends but it didn't show the game I wanted to play. I was also in a tutor and was about to share a tab but there was no tab share option. And yes, i did set permission to share my screen. I don't know how to fix this.