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4grayandClaude Fable 5
7a3d5eae56
An ancestor re-layout can translate the player host without resizing it (sidebar content settling, EPG panel loading below the player). ResizeObserver reports size changes only and no DOM event observes "position changed", so the native child window silently kept its stale coordinates and rendered offset from the DOM stage. The session controller now polls the host bounds every 500 ms while a session is active, compares them against the last synced bounds with a half-pixel tolerance, and re-syncs only on drift — idle cost is one getBoundingClientRect per tick with no IPC. The interval is registered via NgZone.runOutsideAngular and never re-enters the zone, so zone change detection does not run every tick for the whole stream. Frame-copy sessions skip the measurement entirely: the canvas is laid out by the DOM and moves with the layout, so only the native-view child window can go stale on a position-only shift. Fixes #1428 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>