Steps to Reproduce
Create level sequence
Add character
Add animation sequence
Right click -> BakeToControlRig
If a bone name is too long, it fails the ensure condition in this block in UAnimSequencerController::AddCurveControl, because the passed in name may be chopped as part of the GetSafeNewName logic.
HierarchyController->AddControl(CurveControlKey.Name, FRigElementKey(), Settings, FRigControlValue::Make(CurveElement->Get()), FTransform::Identity, FTransform::Identity, false);
const FRigControlElement* ControlElement = Hierarchy->FindChecked<FRigControlElement>(CurveControlKey);
ensure(ControlElement);