I have the same exact problem with Papi. 2 days ago I had 26 hits and somehow also 26 extra base hits (which was wrong because I have 6 doubles and 6 HR's so it should be 26 hits and 12 XBH) and then when I checked again yesterday I had registered 26 hits and only 1 XBH!
not sure what's going on but this only happened to me with Big Papi