diff --git a/crates/skate-core/src/animation/playback_tree/selection_space.rs b/crates/skate-core/src/animation/playback_tree/selection_space.rs
index af36818c..0f0ea7b3 100644
--- a/crates/skate-core/src/animation/playback_tree/selection_space.rs
+++ b/crates/skate-core/src/animation/playback_tree/selection_space.rs
@@ -23,8 +23,6 @@ pub struct SelectionSpace {
     pub parameters: Vec<Parameter>,
     pub candidates: Vec<Candidate>,
     pub selected: Option<usize>,
-    /// Host GetAnimTree callback has supplied the selected child's wrappers.
-    pub child_constructed: bool,
     values: Vec<Option<f32>>,
     speed: f32,
     requested_time: f32,
@@ -44,7 +42,6 @@ impl SelectionSpace {
             parameters,
             candidates,
             selected: None,
-            child_constructed: false,
             values,
             speed: 1.0,
             requested_time: 0.0,
diff --git a/crates/skate-game/src/graph_host/motion_animation/selection_space_host.rs b/crates/skate-game/src/graph_host/motion_animation/selection_space_host.rs
index 585a39af..ab92367d 100644
--- a/crates/skate-game/src/graph_host/motion_animation/selection_space_host.rs
+++ b/crates/skate-game/src/graph_host/motion_animation/selection_space_host.rs
@@ -1,4 +1,4 @@
-//! Deferred native GetAnimTree callback in SelectionSpace::SetAttributes.
+//! Deferred raw-tree callback in SelectionSpace::SetAttributes.
 use super::*;
 
 impl MotionAnimation {
@@ -10,22 +10,11 @@ impl MotionAnimation {
         match tree {
             PlaybackTree::SelectionSpace(space) => {
                 space.select(attributes)?;
-                if !space.child_constructed {
-                    let motion = space
-                        .current()
-                        .ok_or("SelectionSpace has no selected child")?
-                        .clone();
-                    let (motion, posture) = if self.posture_bank_valid {
-                        self.posture
-                            .apply::<_, String>((motion, None), |(motion, _), pose| {
-                                Ok((motion, Some(pose)))
-                            })?
-                    } else {
-                        (motion, None)
-                    };
-                    *space.current_mut().unwrap() = self.add_bind_pose(motion, posture)?;
-                    space.child_constructed = true;
-                }
+                //82D26F88 calls IAnimatable+76, not SkaterAnim::GetAnimTree.
+                //TU3 vtable8231E050+76 ->82E32328 ->82D19648 constructs a
+                //raw child. The enclosing main/channel tree already owns its
+                //bind pose and mirroring; applying those here doubles bone
+                //translations and rotations (visible on offboard jump clips).
                 self.prepare_selection_spaces(space.current_mut().unwrap(), attributes)?;
             }
             PlaybackTree::BlendSpace(space) => {
diff --git a/docs/OFFBOARD_FALL_INVESTIGATION.md b/docs/OFFBOARD_FALL_INVESTIGATION.md
index 89bb5b74..b48527b1 100644
--- a/docs/OFFBOARD_FALL_INVESTIGATION.md
+++ b/docs/OFFBOARD_FALL_INVESTIGATION.md
@@ -32,4 +32,22 @@ established defect. MatchAirTime (82BBA070) seeks the current sequence to the
 fraction of elapsed flight. Generated native instruction extracts are in
 `logs/biped-*.txt`; authoritative TU3 sources remain in Skate3Research.
 
-No gameplay fix is claimed by these diagnostic commits.
+## Located defect
+
+The next user capture, `logs/game-20260906-225525.stderr.log`, identifies
+`SS_BR_JUMP_RUN_INTO`. Before IK, part 19 moves from animation Y=0.541
+at tick 3 to Y=1.794 at tick 4 and Y=2.363 at tick 5. Original joint positions
+already contain the stretch, while the mapped rotation bases have unit length.
+
+The selection-space adapter incorrectly wrapped its selected raw child in a
+second BindPose node. The main playback tree already had that wrapper. This
+composed rest-pose translations and rotations twice as the jump blended in.
+
+Native evidence: SelectionSpace::SetAttributes82D26CC0, call at82D26F88,
+dispatches through IAnimatable+76. TU3 vtable8231E050+76 contains82E32328.
+That three-instruction thunk passes the construction map and calls82D19648
+directly; it does not call posture or AddBindPose. Main GetAnimTree82B980A0
+instead invokes vtable208 (posture) and164 (AddBindPose82B98118) after the
+raw builder. The adapter now preserves this distinction and leaves selected
+children raw, including nested selection spaces. Bail thresholds and physics
+are unchanged. Compilation is checked; gameplay validation belongs to the user.