Seems like today RNGsus have a nice day and decided to laught at me xD I usually have a hard (5xgold 3+Zs) node 9, 11 and 12 and normal node 8 and 10 ( 1-2 gold, rest purple gear and 1-2Zs) But ...
Yes this happens to other people too! You have 'broken' node 12, not sure how this works but mine has been broken since december last year. Congratulations!