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She scrolled the timeline of the interaction back to the exact frame where the stutter began. UXp didn't show her the code. It showed her the rendering pipeline as a stacked waterfall chart: JavaScript → Layout → Paint → Composite.

The cursor blinked on a blank screen. For Maya, a senior UX engineer, that blinking line wasn't a challenge—it was a wall.

The Canvas The first thing Maya noticed was silence . No linter warnings. No dependency conflicts. Just a ghostly wireframe of her component floating in a neutral space.

It didn't give her a vague warning. It showed her a ghost overlay of the card, highlighting a single CSS rule: transform: translateZ(0) . It suggested: "Try 'will-change: transform' on the container."

A new window opened. It wasn't a code editor. It was a canvas.

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