Friend buff benefits to PH/RPH don't actually work.
shows a reduced build time, but like the landing glitch for obs and explorer returns spam, it is only visual. The items are not done and will not be usable until the regular time has elapsed. Meanwhile we get a repeating "buff completed" message every 30 seconds or so until they finish for real. Apparently this problem extends to the barracks and elite barracks as well.
Upon testing, it seems as though the problem for these buildings is caused by buffing. Unbuffed, my E/Reg Barracks were producing fine without problems or resets. However, to test I dropped a Myers buff on my EB and waited for a set of MS to complete (I had 475 in queue). When it was done, it said 450 left. I then zoned back and forth between my adv map and when I came back I got the troops completed message again and when I checked my EB total it back to finishing the 475 group again.
After more testing, it is just the speed buffs that are messing things up. Buffs like steaks and such that double quantity work fine, but things that increase speed (barazek, pralines, Skunk, Myers) do not work properly.
Also want to point out that other PH like buildings (smokehouse, stronghold, snack stand, laboratory...) say they are getting a boost from the friend buff but are not at all. Though I don't think they are supposed to as far as I know so not really a problem but a little confusing.