Dog afraid of online meetings?

My partner started working from home and often has online meetings throughout the day. After a few weeks my dog started to run and hide when he would go into a meeting. Clearly anxious when he checked on him and would not re-enter the room until the laptop was put away. But what’s more odd is that he doesn’t run and hide when one of us pulls out a laptop to do other tasks or even watch a tv show/movie. He also doesn’t seem bothered if one of us is on the phone or FaceTiming. It’s specifically when in video chats/meetings on the laptop. My number one question is, wtf? 😆 Also, how does he know? And has anyone else ever experienced this?