I believe critical chance is still bugged, whether a display issue or not. With Thief active and nothing else that I can tell, critical chance fluctuates between 6.6% and 10.6% and that's without equipping armor with divines. When I equip the armor pieces, 5.5% x 5 = 27.5%, nothing changes. Even if it was working, I believe the fraction is wrong anyway: 5% x 1.275% = 6.375% = 6.4%. I wonder if alliance war bonuses could be causing the value to fluctuate but none of them reference critical chance.