Hey, I just tried and the function is work correctly, could you update to 1.4.2 and try again?
已更新至1.42版本,手機沒有開啟全螢幕顯示時，顯示正常但會在右側多出一排字，不知道是遊戲中會顯示還是手機自帶設定全螢幕的提示？
It's your smartphone function, don't click it. The game screen is 16:9 and if you expand it will cause your game screen to get cut.
Thank you for your help
