Even I face this same stupid issue of increasing ring tone on stock 4.4.4 on my moto e and i needed a fix for this, will try the disable increasing ringtone app just in case if it works
i basically needed the ringer volume to be at maximum however as most of you have pointed out its an issue with this version of android, i had update the rom to marshmallow (resurrection rom ) and there was no issue for this at all..wonder why Moto would do this ???