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a11y.15 / WCAG 2.2.2: the bottom bar's title and artist scrolled for as long as a track played, re-armed in a loop by transitionend, with no pause mechanism and no reduced-motion guard. Reproduced under an emulated prefers-reduced-motion before the fix: the title still carried will-scroll with a 15s transition and the transform was still moving. That read landed in the snap-back half of the cycle, which is why a CSS-only 'transition: none' is the wrong fix -- it leaves the text translated off its own box and transitionend never fires to bring it back. The scroll is not armed at all instead, which is a decision shouldScroll() already owned, and it covers hover as well as always: reduce is a request about motion, not about autoplay. Two things came out of looking at the result rather than asserting on it. The non-scrolling fallback was hard-clipping, not ellipsising, in every mode including the default -- text-overflow was on the outer span while the overflowing box is the inline-block child. And moving it to the child then broke overflow *detection*, because the parent stops overflowing once the child hides its own; both measurements come from the child now. The second was caught by the new test's positive case, which is why it has one.