A cry from my techie side (which is actually barely more than a corner) from last month:
After installing WordPress 4.4, I encountered a minor anomaly. Short version: In posts included in two or more categories, the categories are now listed in the post heading, not in strict alphabetical order as they used to be, but in the order of their assigned ID numbers, whatever they may be. I left a note at the support forum, indicating what I thought might be the issue, and expressing some nominal amount of dismay.
Unusually, no one at the forum deigned to respond to my dismay, but the problem was quietly fixed in 4.4.1, possibly as a by-product from this bug.