I noticed i am getting double cooldown numbers on spell like monks roll or paladin crusader strike.And it snot on 1st charge but on 2nd one when 1st one is already used.

Using ION as action bar but mainteiner is persistant its not ION fault.

Addon i now Neuron if that makes any diff or maybe make things eaiser since new author is makeing quiet a few changes

Neuron has its own cooldown implementation, if you turn that off then it should fix the double cooldown issue

Stacked cooldowns is actually a different issue that I'll try and get to this weekend.

I want say 100% but i am preaty sure I never used ION or Neuron coolddown implementation so that not issue here.And to be sure i tested it on warrior and same thing happens with Neuron cooldown on or off on spells like charge or Ragging blow-basicly on spells with more then 1 stack/charge. It doesnt hapen when you have max charges to use ,only when you already used 1 charge.