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As described in #576, the method `Memory::layer_id_at` expands the hit-testing region for every `Area` slightly. This is necessary so that, when the user clicks to resize a `Window`, the mouse input isn't routed to a different `Window`. For non-resizable `Area`s (such as dropdown menus, context menus, date pickers, and any non-resizable `Window`), this causes them to be surrounded by a "dead zone" where any underlying widgets can't be hovered or clicked. The effect is particularly noticeable in menu bars. This commit adds a persisted `edges_padded_for_resize` property to `Area`, which is `true` when the `Area` belongs to a resizable `Window` and `false` for all other `Area`s. The hit-testing region is only expanded when this property is `true`. --------- Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>