1 item (1 fix)
A ScreenPanel lays out against a logical canvas that is fixed in height at 1080 and takes its width from the window aspect ratio. At a 1920x1080 window the canvas measures 2060.7 x 1080, not 1920 x 1080. Vertical and left-anchored values from a 1920-wide mockup transfer 1:1, but anything hard-centred with arithmetic against an assumed 1920 width sits off-centre. Centre with flex, never with math.
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