I assume this is just beta issues, but just in case.
I am still on KM 7.3.1 and none of the triggers seem to be working in the Mojave beta. I have enabled accessibility access in the security prefs for both KM and KME, but anytime I launch the app it asks again for these to be enabled.
NB: I am not complaining, and if this is just "betas gonna beta" that's fine, but if there's something I can do to work around it, that'd be great.