Implemented previous fixes in the 1.12.2 branch in 1.7.10.

src/main/java/com/legacy/aether/blocks/natural/BlockAetherGrass.java

@@ -28,6 +28,9 @@ public class BlockAetherGrass extends Block implements IGrowable {
 	@SideOnly(Side.CLIENT)
 	private IIcon blockIconTop;
 
+	@SideOnly(Side.CLIENT)
+	private IIcon blockIconSnowy;
+
 	public BlockAetherGrass() {
 		super(Material.grass);
 
@@ -75,6 +78,7 @@ public class BlockAetherGrass extends Block implements IGrowable {
 	@SideOnly(Side.CLIENT)
 	public void registerBlockIcons(IIconRegister registry) {
 		this.blockIcon = registry.registerIcon("aether_legacy:aether_grass_side");
+		this.blockIconSnowy = registry.registerIcon("aether_legacy:aether_grass_side_snowy");
 		this.blockIconTop = registry.registerIcon("aether_legacy:aether_grass_top");
 	}
 
@@ -87,13 +91,19 @@ public class BlockAetherGrass extends Block implements IGrowable {
 	@Override
 	@SideOnly(Side.CLIENT)
 	public IIcon getIcon(IBlockAccess world, int x, int y, int z, int side) {
-		if (side == 1) {
+		if (side == 1)
+		{
 			return this.blockIconTop;
-		} else if (side == 0) {
+		}
+		else if (side == 0)
+		{
 			return BlocksAether.aether_dirt.getBlockTextureFromSide(side);
 		}
-
-		return this.blockIcon;
+		else
+		{
+			Material material = world.getBlock(x, y + 1, z).getMaterial();
+			return material != Material.snow && material != Material.craftedSnow ? this.blockIcon : this.blockIconSnowy;
+		}
 	}
 
 	@Override

src/main/java/com/legacy/aether/blocks/natural/BlockAetherLeaves.java

@@ -4,6 +4,8 @@ import java.util.ArrayList;
 import java.util.Random;
 
 import net.minecraft.block.BlockLeaves;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.texture.IIconRegister;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.IIcon;
@@ -22,6 +24,12 @@ import cpw.mods.fml.relauncher.SideOnly;
 
 public class BlockAetherLeaves extends BlockLeaves {
 
+	@SideOnly(Side.CLIENT)
+	private IIcon fastIcon;
+
+	@SideOnly(Side.CLIENT)
+	private IIcon fancyIcon;
+
 	public BlockAetherLeaves() {
 		super();
 	}
@@ -54,7 +62,6 @@ public class BlockAetherLeaves extends BlockLeaves {
 	@SideOnly(Side.CLIENT)
 	public void randomDisplayTick(World world, int x, int y, int z, Random rand) {
 		super.randomDisplayTick(world, x, y, z, rand);
-
 		if (!world.isRemote) {
 			return;
 		}
@@ -126,10 +133,25 @@ public class BlockAetherLeaves extends BlockLeaves {
 		return drops;
 	}
 
+	@Override
+	@SideOnly(Side.CLIENT)
+	public void registerBlockIcons(IIconRegister p_149651_1_)
+	{
+		this.fancyIcon = p_149651_1_.registerIcon(this.getTextureName());
+		this.fastIcon = p_149651_1_.registerIcon(this.getTextureName() + "_opaque");
+	}
+
 	@Override
 	@SideOnly(Side.CLIENT)
 	public IIcon getIcon(int side, int meta) {
-		return super.blockIcon;
+		if (Minecraft.getMinecraft().gameSettings.fancyGraphics)
+		{
+			return fancyIcon;
+		}
+		else
+		{
+			return fastIcon;
+		}
 	}
 
 	@Override

src/main/java/com/legacy/aether/client/gui/GuiSunAltar.java

@@ -51,4 +51,11 @@ public class GuiSunAltar extends GuiScreen {
 		return false;
 	}
 
+	protected void keyTyped(char p_73869_1_, int p_73869_2_)
+	{
+		if (p_73869_2_ == 1 || p_73869_2_ == this.mc.gameSettings.keyBindInventory.getKeyCode())
+		{
+			this.mc.thePlayer.closeScreen();
+		}
+	}
 }