It's a random glitch. I tried using some extra towns of mine to see if I could stack and it did not work.
I started a thread earlier about getting double handshakes on some of my houses and wondered if it was stackables, so to do a little test I logged into my daughters town and visited my own.
Now I already had two handshakes on the simpson house but was able to tap it again, but... I moved around the screen and it regenerated and I could use all three neighbour taps on that one building!
So when I went back into my own town I still only had two handshakes on that building, not one of the three others had registered. There is something very glitchy going on!
I'm now wondering how many of my neighbour visits I'm not getting and how many of mine are not going through! There is obviously something wrong somewhere!
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