Contradiction between PBDBodies.pdf and PBD.js

[BX80646G3258]

Line 2 of Algorithm 3 (LimitAngle) in PBDBodies.pdf states
if n <dot> n < 0 then phi <- 2Pi - phi

However, in lines 243 - 244 of PBD.js the 2Pi is replaced with Pi
if (a.dot(b) < 0.0) phi = Math.PI - phi;

Using the algorithm in PBDBodies.pdf causes strange behavior when joint limits are set to values over 0.5 Pi.
If this part of the algorithm is meant to distinguish between the two solutions of the inverse sine function, then I believe the implementation in PBD.js is correct, and Algorithm 3 in PBDBodies.pdf contains an error.