Ok, I have an overlay that slides in and out of the screen on a key press. While it's sliding, it creates some weird delay shadows behind it.

 

This is what the delayed shadow looks like:

 

Here's my render code:

package legions.gui;

import legions.ClientProxyL;
import legions.UtilL;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.gui.ScaledResolution;
import net.minecraft.util.ResourceLocation;

import org.lwjgl.opengl.GL11;

import com.sun.org.apache.xml.internal.security.utils.I18n;

public class GuiMenuL extends GuiScreen {
public static final ResourceLocation TEXTURE = UtilL.newResource("textures/gui/icons.png");

public void draw(ScaledResolution sr) {
	GL11.glPushMatrix();
	GL11.glTranslatef(0, ClientProxyL.guiY, 0);
	UtilL.MC.renderEngine.bindTexture(TEXTURE);
	this.drawTexturedModalRect(0, 0, 0, 0, 128, 65);
	int x = (int) UtilL.getScaledX(12, sr);
	UtilL.drawOutlinedString("Menu", x, (int) UtilL.getScaledY(10, sr), 0xFFFFFF, 0x000000);
	switch(ClientProxyL.currentMenu) {
	case (0): {
		UtilL.drawString("1-Summon troops", x, (int) UtilL.getScaledY(30, sr), 0x000000);
		UtilL.drawString("2-Order troops", x, (int) UtilL.getScaledY(48, sr), 0x000000);
		UtilL.drawString("3-", x, (int) UtilL.getScaledY(66, sr), 0x000000);
		UtilL.drawString("4-", x, (int) UtilL.getScaledY(84, sr), 0x000000);
		UtilL.drawString("5-", x, (int) UtilL.getScaledY(102, sr), 0x000000);
		break;
	}
	case (1): {
		UtilL.drawString("1-All troops", x, (int) UtilL.getScaledY(30, sr), 0x000000);
		UtilL.drawString("2-Group 1", x, (int) UtilL.getScaledY(48, sr), 0x000000);
		UtilL.drawString("3-Group 2", x, (int) UtilL.getScaledY(66, sr), 0x000000);
		UtilL.drawString("4-Group 3", x, (int) UtilL.getScaledY(84, sr), 0x000000);
		UtilL.drawString("5-Group 4", x, (int) UtilL.getScaledY(102, sr), 0x000000);
		break;
	}
	}
	GL11.glPopMatrix();
}
}

Ok, now the menu is just black now. The only change's I've made was some of the text I think.

 

package legions.gui;

import legions.ClientProxyL;
import legions.UtilL;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.gui.ScaledResolution;
import net.minecraft.util.ResourceLocation;

import org.lwjgl.opengl.GL11;

public class GuiMenuL extends GuiScreen {
public static final ResourceLocation TEXTURE = UtilL.newResource("textures/gui/icons.png");

public void draw(ScaledResolution sr) {
	GL11.glPushMatrix();
	GL11.glTranslatef(0, ClientProxyL.guiY, 0);
	UtilL.MC.renderEngine.bindTexture(TEXTURE);
	this.drawTexturedModalRect(0, 0, 0, 0, 128, 65);
	int x = (int) UtilL.getScaledX(12, sr);
	UtilL.drawOutlinedString("Menu", x, (int) UtilL.getScaledY(10, sr), 0xFFFFFF, 0x000000);
	switch(ClientProxyL.currentMenu) {
	case (0): {
		UtilL.drawString("1-Summon troops", x, (int) UtilL.getScaledY(30, sr), 0x000000);
		UtilL.drawString("2-Order troops", x, (int) UtilL.getScaledY(48, sr), 0x000000);
		UtilL.drawString("3-", x, (int) UtilL.getScaledY(66, sr), 0x000000);
		UtilL.drawString("4-", x, (int) UtilL.getScaledY(84, sr), 0x000000);
		UtilL.drawString("5-", x, (int) UtilL.getScaledY(102, sr), 0x000000);
		break;
	}
	case (1): {
		UtilL.drawString("1-All troops", x, (int) UtilL.getScaledY(30, sr), 0x000000);
		UtilL.drawString("2-Group 1", x, (int) UtilL.getScaledY(48, sr), 0x000000);
		UtilL.drawString("3-Group 2", x, (int) UtilL.getScaledY(66, sr), 0x000000);
		UtilL.drawString("4-Group 3", x, (int) UtilL.getScaledY(84, sr), 0x000000);
		UtilL.drawString("5-Group 4", x, (int) UtilL.getScaledY(102, sr), 0x000000);
		break;
	}
	}
	GL11.glPopMatrix();
}
}

 

You didn't disable GL11's lighting and then re enable it

You didn't disable GL11's lighting and then re enable it

 

Nope

 

 

Resetting the color did the job for me:

GL11.glColor3f(1, 1, 1);