Yay! So it's CoC doing bad things?
Unsure yet. I have to type at full speed, but I can do a comparsion today when I get the chance. Rainy day + 3 year old, not much time for tappity-tap-tap things on the 'puter....
Spend time with your family, puters won't change while you're not looking at them :)
I mangaed to steal a bit of time. So far, deoplete + float-preview is not giving me the same issue as CoC. I will continue my experimentation.