14.15: a chosen layer is revealed in the Layers panel

src/UI/NativeLayerList.h

@@ -271,6 +271,8 @@ private:
     EditorSession &m_session;
     LayerColumn *const m_column;
     std::vector<LayerCell *> m_cells;
+    // The active layer last shown: a new one scrolls in.
+    std::optional<QUuid> m_shownActive;
     std::vector<ImageLayer> m_rows;
     std::map<QUuid, LayerHierarchy::Entry> m_details;
     bool m_editingEnabled = false;