diff --git a/runelite-mixins/src/main/java/net/runelite/mixins/RSGameCanvasMixin.java b/runelite-mixins/src/main/java/net/runelite/mixins/RSGameCanvasMixin.java
new file mode 100644
index 0000000000..b2b33d5354
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+++ b/runelite-mixins/src/main/java/net/runelite/mixins/RSGameCanvasMixin.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018 Abex
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.mixins;
+
+import java.awt.Canvas;
+import java.awt.event.FocusListener;
+import net.runelite.api.mixins.Inject;
+import net.runelite.api.mixins.Mixin;
+import net.runelite.rs.api.RSGameCanvas;
+
+@Mixin(RSGameCanvas.class)
+public abstract class RSGameCanvasMixin extends Canvas implements RSGameCanvas
+{
+	// This is inverted because it is false initialized.
+	@Inject
+	private static boolean shouldNotHaveFocus;
+
+	@Inject
+	@Override
+	public void removeFocusListener(FocusListener l)
+	{
+		super.removeFocusListener(l);
+		shouldNotHaveFocus = !this.hasFocus();
+	}
+
+	@Inject
+	@Override
+	public void requestFocus()
+	{
+		// Runescape requests focus whenever the window is resized. Because of this, PluginPanels cannot have focus
+		// if they cause the sidebar to expand. This change prevents Runescape from requesting focus whenever it wants
+		if (!shouldNotHaveFocus)
+		{
+			this.requestFocusInWindow();
+		}
+	}
+}