Checklist

• I have searched for existing issues
• I have looked through the wiki
• I have updated MonitorControl to the latest version

Describe the bug
Function row brightness and volume keys (apple magic keyboard) no longer work for me. They work up to version 2.1.0, but not in 2.2.0 or the 3.0.0 beta. I'm using LG 5K2K displays. This bug is present when one or both monitors are connected.

To Reproduce
Launch MonitorControl 2.2.0 and use function row keys to adjust display brightness or volume.

Expected behavior
Brightness keys should adjust brightness, volume keys should adjust volume.

Additional context
The menu bar sliders do work to adjust brightness and volume. Also, the Hide OSD option works for volume now on my displays (yay!) when using the function keys, but of course the keys do not adjust volume (just as the brightness keys do not adjust brightness). The volume OSD is not hidden when using the menu bar sliders, but the brightness OSD is.

Behavior is not affected by the Hide OSD toggle, but it may be affected by the Polling Mode. It is hard to tell, but cycling the brightness up and down with the function keys will produce sporadic increases or decreases in brightness (depending on which key is being pressed), generally at the extremes of the brightness scale.

Environment Information (please complete the following information):

• macOS version: 11.5
• Mac model: iMac Retina 5K, 27-inch, 2019
• MonitorControl version: 2.2.0
• Monitor(s): LG 5K2K
• Apple Silicon/M1 (yes or no): no