Inactive users in with black screen

I am in a conference room but i can only see people speaking.
The others appears as inactive when they don’t speak and their image is black.
When they speak the image appear.
How can I always see them?

We experience the same on our instance. If you klick on the user an “pin” it to the screen their camera works even if the are not speaking.

Would be nice to hear how this can be disable or fixed so that all cameras remain active.

I have it working now. It was due to an ad blocker for me…