diff --git a/.vscode/launch.json b/.vscode/launch.json
index 3f328c530..86ad21c5f 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -67,7 +67,7 @@
             "name": "Debug executable 'all_examples2'",
             "cargo": {
                 "args": [
-                    "build",
+                    "run",
                     "--bin=all_examples2",
                     "--package=rapier-examples-2d"
                 ],
@@ -104,7 +104,8 @@
             "name": "Debug executable 'all_benchmarks2'",
             "cargo": {
                 "args": [
-                    "build",
+                    "run",
+                    "--release",
                     "--bin=all_benchmarks2",
                     "--package=rapier-benchmarks-2d"
                 ],
@@ -323,4 +324,4 @@
             "cwd": "${workspaceFolder}"
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/examples2d/debug_box_ball2.rs b/examples2d/debug_box_ball2.rs
index 9725ccfdc..9f885bcac 100644
--- a/examples2d/debug_box_ball2.rs
+++ b/examples2d/debug_box_ball2.rs
@@ -1,4 +1,4 @@
-use rapier2d::prelude::*;
+use rapier2d::{prelude::*, parry};
 use rapier_testbed2d::Testbed;
 
 pub fn init_world(testbed: &mut Testbed) {
@@ -10,28 +10,49 @@ pub fn init_world(testbed: &mut Testbed) {
     let impulse_joints = ImpulseJointSet::new();
     let multibody_joints = MultibodyJointSet::new();
 
+    // Bug
+
+    let shape1 = SharedShape::capsule_y(5.0, 10.0);
+    let mut vec = Vec::<Point::<Real>>::with_capacity(3);
+    unsafe {
+        vec.push(Point::<Real> { coords : vector![64.0, 507.0] });
+        vec.push(Point::<Real> { coords : vector![440.0, 326.0] });
+        vec.push(Point::<Real> { coords : vector![1072.0, 507.0] });
+    }
+    let shape2 = SharedShape::convex_polyline(vec);
+    let shape2 = shape2.unwrap();
+    let transform1 = Isometry::new(vector![381.592, 348.491], 0.0);
+    let transform2 = Isometry::new(vector![0.0, 0.0], 0.0);
+
     /*
      * Ground
      */
     let rad = 1.0;
     let rigid_body = RigidBodyBuilder::fixed()
-        .translation(vector![0.0, -rad])
-        .rotation(std::f32::consts::PI / 4.0);
+        .translation(vector![0.0, 0.0])
+        .rotation(0.0);
     let handle = bodies.insert(rigid_body);
-    let collider = ColliderBuilder::cuboid(rad, rad);
-    colliders.insert_with_parent(collider, handle, &mut bodies);
+    //let collider = ColliderBuilder::cuboid(rad, rad);
+    colliders.insert_with_parent(ColliderBuilder::new(shape2.clone()), handle, &mut bodies);
 
     // Build the dynamic box rigid body.
-    let rigid_body = RigidBodyBuilder::dynamic()
-        .translation(vector![0.0, 3.0 * rad])
+    let rigid_body = RigidBodyBuilder::fixed()
+        .translation(vector![381.592, 348.491])
         .can_sleep(false);
     let handle = bodies.insert(rigid_body);
-    let collider = ColliderBuilder::ball(rad);
-    colliders.insert_with_parent(collider, handle, &mut bodies);
-
+    //let collider = ColliderBuilder::ball(rad);
+    colliders.insert_with_parent(ColliderBuilder::new(shape1.clone()), handle, &mut bodies);
+    
+    if let Ok(Some(contact)) = parry::query::contact(
+        &transform1, shape1.as_ref(), &transform2, shape2.as_ref(), 1.0
+    ) {
+        panic!("collision");
+    } else {
+        print!("no collision");
+    }
     /*
      * Set up the testbed.
      */
     testbed.set_world(bodies, colliders, impulse_joints, multibody_joints);
-    testbed.look_at(point![0.0, 0.0], 50.0);
+    testbed.look_at(point![381.592, 348.491], 1.0);
 }