Celtic's procession to a fourth successive Scottish Premiership title has faced a setback. Brendan Rodgers was highly disappointed with the defeat at St Johnstone. The team's early season consistency has waned since January, with repeated early goal concessions. Rodgers is worried about the players' mentality and comfort level. Despite being close to the title, there are issues to address for a domestic treble bid. The upcoming Scottish Cup semi-final against St Johnstone poses a challenge.