Fixed
- Dashboard blank-screen on scroll — new lead identified after the previous glass/gradient theories were ruled out by an iOS
prefers-reduced-transparency: reducetest (bug persisted even with reduced transparency, so backdrop-filter andcolor-mixgradients are not the cause). Remaining differentiator: only the dashboard renders a.fab-backdropelement — aposition: fixed; inset: 0full-viewport overlay that was always in the DOM (initialopacity: 0) so the FAB speed-dial open/close could cross-fade. iOS Safari and iOS PWA repeatedly composite fixed-positioned full-viewport elements per scroll frame, which is a known trigger for the blank-screen symptom in this exact scenario. Other module pages don't have this overlay and didn't reproduce the bug. Switched.fab-backdropfromopacity: 0+ always-onposition: fixed; inset: 0todisplay: nonewhen inactive; only laid out when the FAB speed-dial is open. The opacity cross-fade is lost (was barely perceptible) but the dashboard scroll path no longer carries a permanent full-viewport fixed layer.