classical critical event of type a shows wrong height (9.9 instead of 10)

[https://abegehr.github.io/frechet/?p=(6_5)(6_16)(6_6)(-7_17)(6_16)&q=(8_6)(-4_6)(6_16)](https://abegehr.github.io/frechet/?p=(6_5)(6_16)(6_6)(-7_17)(6_16)&q=(8_6)(-4_6)(6_16))
classical critical event at (~38.0, ~17.7) shows height 9.9, should be 10.0