diff --git a/src/random.rs b/src/random.rs
index b792266..b761532 100644
--- a/src/random.rs
+++ b/src/random.rs
@@ -122,11 +122,21 @@ impl Widget for Branch {
         let measured = painter
             .widget_at(&self.probe, [None; 2], [Place::Within(Part::All), top])
             .len(Axis::X);
-        let px = painter.to_px(measured.apply_leftover(), Axis::X);
+        let len = measured.apply_leftover();
+        let px = painter.to_px(len, Axis::X);
+        // The range it actually branched on, said the way a container says
+        // one: pinning the window instead would redraw this widget on every
+        // resize, which is a fixture that never exercises reuse.
+        let threshold = Px::from_f32(self.threshold);
+        let holds = match px > threshold {
+            true => Holds::from(threshold + Px::STEP..=Px::MAX),
+            false => Holds::from(Px::MIN..=threshold),
+        };
+        painter.window_holds(Axis::X, holds.through(len));
 
         let below = Place::Within(Part::From(UiSpan::new(cut, painter.extent_len(Axis::Y))));
         let place = [Place::Within(Part::All), below];
-        match px > Px::from_f32(self.threshold) {
+        match px > threshold {
             true => painter.widget_at(&self.wide, [None; 2], place),
             false => painter.widget_at(&self.narrow, [None; 2], place),
         };