Hubitat sending Mode - Home Hubitat and Mode - Away Hubitat to Homekit - not sure what is happening

Which Hubitat plugin for homebridge are you using? There are two I’m aware of, but I’ll hazard a guess you’re using this one.

If that’s the case, then creating mode switches is optional, and can be toggled off in the homebridge Hubitat app’s settings if you don’t intend to use them. Then you can delete the switches in the Apple Home app.

FWIW, the mode switches work just fine for me in the Apple Home app, though.