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Canvas does not follow its container
After a resize or rotation the picture stretches, blurs or leaves a blank strip.
Cards that use this check
0 cards, 0 with it as the free first checkAbout this collection
Why it happens
Size is read once at start-up; nothing watches the container or updates the camera aspect.
Check / fix block
FreeCheck: watch the canvas container (not window) with ResizeObserver; on every change call renderer.setSize, set camera.aspect and camera.updateProjectionMatrix(). Drag the window from 1280 to 375 wide: no stretching, no blank strip.
The library itself is public. On a card, the first check is free; the rest and the contact sheet are Pro.