Flutter ListView/CustomScrollView viewport recycling gotchas and debugging patterns. Use when debugging Flutter issues where widget state changes do not reflect in the UI, `didUpdateWidget` is never called, `ScrollController` has no clients, or selected items in horizontally scrollable lists are not
Flutter ListView/CustomScrollView viewport recycling gotchas and debugging patterns. Use when debugging Flutter issues where widget state changes do not reflect in the UI, `didUpdateWidget` is never called, `ScrollController` has no clients, or selected items in horizontally scrollable lists are not visible. Triggers on keywords like "didUpdateWidget not called", "ListView recycling", "widget stat