If I'm not wrong after update 4.8.0 there shoudln't be exactly two the same tarinspotters at the same time?
You are correct, there should be no twins in the game anymore.
Was this the first time you saw a twinspotter? Or has this happened before?
I will let the devs know. Thank you for the image and for bringing this up!
No, It's the first time I saw something like this.
Right now, there are more than one copy (included previous two trainspotters)
I believe this may be the reason why...
If you don't fully collect the 10 when you have 10 - they can reappear in the next full 10, because they were part of the old 10 - Hope this helps. Best option is to make sure you always clear all 10 train spotters.