It could be all in my head but I also noticed a significant drop to what I would consider "normal" rarity. Might just be very unlucky otherwise others would've pointed this out too by now. I hope there isn't anything wrong with OP's account though!
sometimes i forgot voting for NX but... i tried voting everyday and i tried gacha whenever i get 30,000NX. so i dont know how many tickets i uesd for shirne gacha exactly but i did my best for getting CS i guess this case is terribly unlucky... it's just my little complaint
Will appreciate it if you guys could provide some statistics to back up the claim Else it's difficult for the Staff to review this situation Although I don't keep track of my gacha results, I do so for BWG exchange, and can confirm Showa Exchange is not bugged You don't have to provide such a detailed statistics, but Staff would need at least an estimation for further investigation