fix scroll capping

src/main/java/com/terraformersmc/modmenu/gui/widget/entries/EntryListWidget.java

@@ -4,13 +4,15 @@
 import org.lwjgl.opengl.GL11;
 
 import com.mojang.blaze3d.vertex.BufferBuilder;
+
 import com.terraformersmc.modmenu.util.GlUtil;
+import com.terraformersmc.modmenu.util.ListWidgetHelper;
 import com.terraformersmc.modmenu.util.MathUtil;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.widget.ListWidget;
 
-public abstract class EntryListWidget extends ListWidget {
+public abstract class EntryListWidget extends ListWidget implements ListWidgetHelper {
 
 	protected double scrollAmount;
 	private boolean scrolling;
@@ -295,6 +297,20 @@ public void setScrollAmount(double amount) {
 		this.scrollAmount = amount;
 	}
 
+	@Override
+	public void doCapScrolling() {
+		int max = this.getHeight() - (this.maxY - this.minY - 4);
+		if (max < 0) {
+			max /= 2;
+		}
+		if (this.scrollAmount < 0.0F) {
+			this.scrollAmount = 0.0F;
+		}
+		if (this.scrollAmount > max) {
+			this.scrollAmount = max;
+		}
+	}
+
 	protected int getMaxScroll() {
 		return Math.max(0, this.getHeight() - (this.maxY - this.minY - 4));
 	}

src/main/java/com/terraformersmc/modmenu/mixin/MixinListWidget.java

@@ -0,0 +1,23 @@
+package com.terraformersmc.modmenu.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import com.terraformersmc.modmenu.util.ListWidgetHelper;
+
+import net.minecraft.client.gui.widget.ListWidget;
+
+@Mixin(ListWidget.class)
+public class MixinListWidget implements ListWidgetHelper {
+
+	@Inject(method = "capScrolling", at = @At("HEAD"))
+	private void modmenu$capScrolling(CallbackInfo ci) {
+		this.doCapScrolling();
+	}
+
+	@Override
+	public void doCapScrolling() {
+	}
+}

src/main/java/com/terraformersmc/modmenu/util/ListWidgetHelper.java

@@ -0,0 +1,7 @@
+package com.terraformersmc.modmenu.util;
+
+public interface ListWidgetHelper {
+
+	void doCapScrolling();
+
+}