diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInfoTableModel.java b/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInfoTableModel.java
index f9626b705a..23f524d984 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInfoTableModel.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInfoTableModel.java
@@ -24,24 +24,45 @@
  */
 package net.runelite.client.plugins.devtools;
 
+import com.google.common.collect.ImmutableMap;
+import com.google.inject.Inject;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import javax.swing.SwingUtilities;
 import javax.swing.table.AbstractTableModel;
 import net.runelite.api.widgets.Widget;
+import net.runelite.client.callback.ClientThread;
 
 public class WidgetInfoTableModel extends AbstractTableModel
 {
+	@Inject
+	private ClientThread clientThread;
+
 	private static final int COL_FIELD = 0;
 	private static final int COL_VALUE = 1;
 
 	private static final List<WidgetField> fields = populateWidgetFields();
 
 	private Widget widget = null;
+	private Map<WidgetField, Object> values = null;
 
 	public void setWidget(Widget w)
 	{
-		this.widget = w;
-		fireTableStructureChanged();
+		clientThread.invoke(() ->
+		{
+			Map<WidgetField, Object> newValues = w == null ? null : fields.stream().collect(ImmutableMap.toImmutableMap(
+				Function.identity(),
+				i -> i.getValue(w)
+			));
+			SwingUtilities.invokeLater(() ->
+			{
+				widget = w;
+				values = newValues;
+				fireTableStructureChanged();
+			});
+		});
 	}
 
 	@Override
@@ -67,11 +88,11 @@ public class WidgetInfoTableModel extends AbstractTableModel
 	@Override
 	public int getRowCount()
 	{
-		if (widget == null)
+		if (values == null)
 		{
 			return 0;
 		}
-		return fields.size();
+		return values.size();
 	}
 
 	@Override
@@ -83,7 +104,7 @@ public class WidgetInfoTableModel extends AbstractTableModel
 			case COL_FIELD:
 				return field.getName();
 			case COL_VALUE:
-				return field.getValue(widget);
+				return values.get(field);
 			default:
 				return null;
 		}
@@ -104,7 +125,11 @@ public class WidgetInfoTableModel extends AbstractTableModel
 	public void setValueAt(Object value, int rowIndex, int columnIndex)
 	{
 		WidgetField<?> field = fields.get(rowIndex);
-		field.setValue(widget, value);
+		clientThread.invoke(() ->
+		{
+			field.setValue(widget, value);
+			setWidget(widget);
+		});
 	}
 
 	private static List<WidgetField> populateWidgetFields()
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInspector.java b/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInspector.java
index d5de3a82c4..7921942948 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInspector.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/devtools/WidgetInspector.java
@@ -36,7 +36,6 @@ import java.awt.event.WindowEvent;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.ExecutionException;
 import javax.swing.JButton;
 import javax.swing.JCheckBox;
 import javax.swing.JFrame;
@@ -45,7 +44,7 @@ import javax.swing.JScrollPane;
 import javax.swing.JSplitPane;
 import javax.swing.JTable;
 import javax.swing.JTree;
-import javax.swing.SwingWorker;
+import javax.swing.SwingUtilities;
 import javax.swing.tree.DefaultMutableTreeNode;
 import javax.swing.tree.DefaultTreeModel;
 import lombok.extern.slf4j.Slf4j;
@@ -54,12 +53,14 @@ import net.runelite.api.events.ConfigChanged;
 import net.runelite.api.widgets.Widget;
 import net.runelite.api.widgets.WidgetInfo;
 import net.runelite.api.widgets.WidgetItem;
+import net.runelite.client.callback.ClientThread;
 import net.runelite.client.ui.ClientUI;
 
 @Slf4j
 class WidgetInspector extends JFrame
 {
 	private final Client client;
+	private final ClientThread clientThread;
 	private final DevToolsPlugin plugin;
 	private final DevToolsConfig config;
 
@@ -70,10 +71,11 @@ class WidgetInspector extends JFrame
 	private static final Map<Integer, WidgetInfo> widgetIdMap = new HashMap<>();
 
 	@Inject
-	WidgetInspector(DevToolsPlugin plugin, Client client, WidgetInfoTableModel infoTableModel, DevToolsConfig config, EventBus eventBus)
+	WidgetInspector(DevToolsPlugin plugin, Client client, ClientThread clientThread, WidgetInfoTableModel infoTableModel, DevToolsConfig config, EventBus eventBus)
 	{
 		this.plugin = plugin;
 		this.client = client;
+		this.clientThread = clientThread;
 		this.infoTableModel = infoTableModel;
 		this.config = config;
 
@@ -157,45 +159,31 @@ class WidgetInspector extends JFrame
 
 	private void refreshWidgets()
 	{
-		new SwingWorker<DefaultMutableTreeNode, Void>()
+		clientThread.invokeLater(() ->
 		{
-			@Override
-			protected DefaultMutableTreeNode doInBackground() throws Exception
-			{
-				Widget[] rootWidgets = client.getWidgetRoots();
-				DefaultMutableTreeNode root = new DefaultMutableTreeNode();
+			Widget[] rootWidgets = client.getWidgetRoots();
+			DefaultMutableTreeNode root = new DefaultMutableTreeNode();
 
+			plugin.currentWidget = null;
+			plugin.itemIndex = -1;
+
+			for (Widget widget : rootWidgets)
+			{
+				DefaultMutableTreeNode childNode = addWidget("R", widget);
+				if (childNode != null)
+				{
+					root.add(childNode);
+				}
+			}
+
+			SwingUtilities.invokeLater(() ->
+			{
 				plugin.currentWidget = null;
 				plugin.itemIndex = -1;
-
-				for (Widget widget : rootWidgets)
-				{
-					DefaultMutableTreeNode childNode = addWidget("R", widget);
-					if (childNode != null)
-					{
-						root.add(childNode);
-					}
-				}
-
-				return root;
-			}
-
-			@Override
-			protected void done()
-			{
-				try
-				{
-					plugin.currentWidget = null;
-					plugin.itemIndex = -1;
-					refreshInfo();
-					widgetTree.setModel(new DefaultTreeModel(get()));
-				}
-				catch (InterruptedException | ExecutionException ex)
-				{
-					throw new RuntimeException(ex);
-				}
-			}
-		}.execute();
+				refreshInfo();
+				widgetTree.setModel(new DefaultTreeModel(root));
+			});
+		});
 	}
 
 	private DefaultMutableTreeNode addWidget(String type, Widget widget)