I am playing Spins since 2 weeks, I noticed it today the first time.
For Example I won an 30$ Spin like this; (this is what I get from Pokerstars)
PokerStars Tournament #1888549775, No Limit Hold'em
Buy-In: $28.20/$1.80 USD
3 players
Total Prize Pool: $180.00 USD
Tournament started 2017/04/19 13:20:45 CET [2017/04/19 7:20:45 ET]
Tournament finished 2017/04/19 13:26:04 CET [2017/04/19 7:26:04 ET]
1: "X", $180.00 (100%)
2: hansivanov (Bulgaria),
3: scooberzzzz (Australia),
You finished in 1st place.
Another Example;
PokerStars Tournament #1888561785, No Limit Hold'em
Buy-In: $28.20/$1.80 USD
3 players
Total Prize Pool: $60.00 USD
Tournament started 2017/04/19 13:39:16 CET [2017/04/19 7:39:16 ET]
Tournament finished 2017/04/19 13:48:44 CET [2017/04/19 7:48:44 ET]
1: "X" , $60.00 (100%)
2: 2lazy2name (Luxembourg),
3: Magik4ever (Poland),
You finished in 1st place.
in Pokertracker it shows me this;
http://imgur.com/a/ieNmT
I just checked my history from yesterday, and it sometimes appears their aswell, just this random win of 54.60$ in Pockertracker
It happend in the $15 Spins aswell, sorry for opening that threat, maybe its an known issue!?