Check your browser zoom level
Safari screen size

Yup, exactly what's happening to me (since like a month ago). That's why I can't on play on apple browser anymore. Doesn't show me me both clocks, unless I scroll up and down like a mor*n during the game. But they don't care dude. No staff from chess.com even reads these forums. I tried adressing multiple major bugs and issues + seen other people do that regarding major issues with wide support and no-one is willing to listen to the community and implement these fixes.

Check your browser zoom level
I've done that too, with only a compromise. I wonder what platform others are using on this site?
I use the iOS app on my iPhone and iPad but on the iMac I use Safari.
One of the advantages of playing on iMac/ Safari is that during Rapid gameplay, it shows me the move history and opening in a separate window with game clock above and below the board.
No, it doesn’t provide any positional analysis during the game (I wish- LoL).
My issue is I can’t find a screen configuration (size) that shows both clocks. I have to scroll my mouse to fully see both play clocks. I don’t have this problem on the other devices, but I also don’t get the other information.
Looking for someone that has a better idea on how to configure my screen real estate so I can better focus on gameplay.
I do have Opera and Chrome browsers on my iMac, haven’t tried them with Chess.com to know if the problem is there also, and I’m disinclined to do so as I use them for a single purpose. Safari had been great for just about everything else.
Thanks.