I have an curve controller which is being driven by twocontrained parents, and the parenting is set so the sum of the two parents is 1 (e.g. 0.7 and 0.3 of parenting factor). When I rotate one of the parent controller it all goes fine, but there are some specific rotation values that make the child go in a crazy rotation amount.
The parenting is being done to a parent group to the controller, not the controller itself, as it should be.
This glitch looks like a dependency cycle, but if it really was, it would glitch all the time, not just in specific rotation values. What could be happening?