Grey bar using VNC client

Hi - I have this issue on my headless RPi 4B 8GB. No matter which VNC client I use, I get this annoying grey bar on the left. Has anyone come across this issue? I have tried adjusting the resolution in rasp-config but it doesn't affect anything. I am using the default vncserver by RealVNC. I am on bookworm updated to latest. Any help would be appreciated. Thank you!

Check resolution

The VNC one