Round circle with warning hand showing up on a clients screen during a meeting

[SpiderLamb]

I have been using a private room to host 1:1 meetings. In one of the meetings the client let me know that a hand in a circle with line going around that changes color like something is loading shows up in the lower middle of her screen. (this is not a raised hand, as we experimented with that, but she said its a different icon and different position) It seems to happen 10 minutes before the end of our meetings, I have not had any other clients let me know this is occurring. I tried researching this but can't find an answer. Does anyone know what this might be.

Thank you!