JerryScript
Android Expert
I asked Jerry about this earlier in this thread. IIRC, he said it is a problem with the cyanogenmod port and he does not like to mess with the actual phone script.
In other words, a fix is not in the works.
I've learned to just do the volume trick. Doesn't bug me anymore.
Just to clarify this issue. It is a known issue on Gerrit, the code review system for CyanogenMod. It is unknown when it will be resolved.