Please consider trying my fork (Announcing some improvements to the Homekit plugin for OpenHab2); I was using the homebridge / openhab plugin (and actually had contributed to it!), but I have been since working on the OpenHab2 plugin.
I’ve been sending a lot of fixed to HAP-Java, also, which are getting merged.
Once we get a new HAP-Java release with my changes, I’ll work towards integrating my fork into the mainline.