I have not been tracking the mining productivity in my save for a while, but just noticed that mining productivity from unique item bonuses are not being added to my actual mining productivity. I'm at mining productivity 5 research (+50%), and have +39% from item bonuses, but my total productivity is still 50%, and if I turn the bonuses off in the item buffs screen, I get 11% mining productivity, which is definitely incorrect.
There are some other wonky things with recipe productivity as well, where they sometimes don't seem to apply until turning them off and on again in the item buffs screen. I'm not exactly sure what caused this, but I've seen this happen to circuits, gear wheels, and quality modules, where my EM plants are still at 50% prod even with unlocked prod buffs.
I think these two issues may be related?