Fit.Layout doesn't reflow elements in canvas-lite

[david-corb-hh]

---

Title:
Fit.Layout doesn't reflow layout-constrained elements in canvas-lite — elements render at top-left instead of
anchored position

---

Description:

When using @rive-app/react-canvas-lite with Fit.Layout, elements that use Rive Layout constraints (e.g.
pinned to bottom-left) are not reflowed correctly. They render at the top-left of the canvas instead of their
anchored position. The exact same .riv file works correctly with @rive-app/react-canvas (full runtime).

Environment:

  - @rive-app/canvas-lite: 2.35.0 (also reproduced on 2.34.3)
  - @rive-app/react-canvas-lite: 4.27.0
  - Works correctly with: @rive-app/react-canvas@4.26.2 + @rive-app/canvas@2.34.2
  - Browser: Chrome / Safari on macOS

Artboard info (from rive.bounds and rive.layout?.layoutScaleFactor):

  layoutScaleFactor: 1
  bounds: { minX: 0, minY: 0, maxX: 1512, maxY: 798 }

Canvas at runtime: correctly fills the viewport. The canvas
sizing itself is fine — the bug is purely the position of elements within the canvas.

Code:

  const { rive, RiveComponent } = useRive({
    src: animationUrl,
    stateMachines: 'Training Machine',
    layout: new Layout({ fit: Fit.Layout }),
  });

  return (
    <div style={{ position: 'fixed', inset: 0 }}>
      <RiveComponent />
    </div>
  );

Expected: elements pinned to bottom-left via Rive Layout constraints render at the bottom-left of the canvas
(as they do with react-canvas).

Actual: elements render at the top-left of the canvas regardless of their layout constraints.