Fix #2350

modules/LayoutAPI/src/main/java/org/gephi/layout/LayoutModelImpl.java

@@ -207,6 +207,9 @@ public class LayoutModelImpl implements LayoutModel, Model {
     }
 
     public void loadProperties(Layout layout) {
+        // In case some properties are only locally defined (like cooling in ForceAtlas)
+        layout.resetPropertiesValues();
+
         List<LayoutPropertyKey> layoutValues = new ArrayList<>();
         for (LayoutPropertyKey val : savedProperties.keySet()) {
             if (val.layoutClassName.equals(layout.getClass().getName())) {

modules/LayoutAPI/src/test/java/org/gephi/layout/LayoutModelImplTest.java

+package org.gephi.layout;
+
+import org.gephi.layout.utils.MockLayout;
+import org.gephi.layout.utils.MockLayoutBuilder;
+import org.gephi.layout.utils.Utils;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class LayoutModelImplTest {
+
+    @Test
+    public void testLocalPropertyReset() throws Exception {
+        LayoutModelImpl layoutModel = Utils.newLayoutModel();
+        MockLayout layout = new MockLayoutBuilder().buildLayout();
+        Assert.assertNotEquals(42.0, layout.getLocalProperty(), 0.0);
+        layoutModel.setSelectedLayout(layout);
+
+        Assert.assertEquals(42.0, layout.getLocalProperty(), 0.0);
+    }
+}

modules/LayoutAPI/src/test/java/org/gephi/layout/utils/MockLayout.java

@@ -15,6 +15,7 @@ public class MockLayout implements Layout {
     private final MockLayoutBuilder builder;
     private double angle;
     private Column column;
+    private double localProperty = 0.0;
 
     public MockLayout(MockLayoutBuilder builder) {
         this.builder = builder;
@@ -70,7 +71,11 @@ public class MockLayout implements Layout {
 
     @Override
     public void resetPropertiesValues() {
+        localProperty = 42.0;
+    }
 
+    public double getLocalProperty() {
+        return localProperty;
     }
 
     @Override