Sensitivity analysis said I wouldn't find an effect less than .8 but I did!

#1
Hello!

I ran a sensitivity analysis on G*power and it told me that for my independent samples t test (10 people per group, alpha = .05, power =.8) I wouldn't find an effect size smaller than d = 1.32.

I then ran the t test and got a significant result with an d = 1.15

How is this possible?