ompl_ros_interface bug for joint value exactly equal to PI [closed]

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my robot has a continuous joint. when doing the planning in the joint space, ompl_ros_interface works well. But today i find a strange problem. if the goal value of the continuous joint exactly equal to PI, (i,e, ompl_request.motion_plan_request.goal_constraints.joint_constraints), ompl_ros_interface will return an error with code -1, saying "Unable to sample any valid states for goal tree". if i change the value to 3.1415926, it works well. so i think this is a bug in ompl_ros_interface. don't know where to report this bug, so just post here in the hope that it may help other people.

p.s. Merry Christmas to every body~