CatServer/patches/net/minecraft/client/renderer/InventoryEffectRenderer.java.patch

--- ../src-base/minecraft/net/minecraft/client/renderer/InventoryEffectRenderer.java
+++ ../src-work/minecraft/net/minecraft/client/renderer/InventoryEffectRenderer.java
@@ -28,13 +28,19 @@
 
     protected void updateActivePotionEffects()
     {
-        if (this.mc.player.getActivePotionEffects().isEmpty())
+        boolean hasVisibleEffect = false;
+        for(PotionEffect potioneffect : this.mc.player.getActivePotionEffects()) {
+            Potion potion = potioneffect.getPotion();
+            if(potion.shouldRender(potioneffect)) { hasVisibleEffect = true; break; }
+        }
+        if (this.mc.player.getActivePotionEffects().isEmpty() || !hasVisibleEffect)
         {
             this.guiLeft = (this.width - this.xSize) / 2;
             this.hasActivePotionEffects = false;
         }
         else
         {
+            if (net.minecraftforge.common.MinecraftForge.EVENT_BUS.post(new net.minecraftforge.client.event.GuiScreenEvent.PotionShiftEvent(this))) this.guiLeft = (this.width - this.xSize) / 2; else
             this.guiLeft = 160 + (this.width - this.xSize - 200) / 2;
             this.hasActivePotionEffects = true;
         }
@@ -71,6 +77,7 @@
             for (PotionEffect potioneffect : Ordering.natural().sortedCopy(collection))
             {
                 Potion potion = potioneffect.getPotion();
+                if(!potion.shouldRender(potioneffect)) continue;
                 GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
                 this.mc.getTextureManager().bindTexture(INVENTORY_BACKGROUND);
                 this.drawTexturedModalRect(i, j, 0, 166, 140, 32);
@@ -81,6 +88,8 @@
                     this.drawTexturedModalRect(i + 6, j + 7, 0 + i1 % 8 * 18, 198 + i1 / 8 * 18, 18, 18);
                 }
 
+                potion.renderInventoryEffect(i, j, potioneffect, mc);
+                if (!potion.shouldRenderInvText(potioneffect)) { j += l; continue; }
                 String s1 = I18n.format(potion.getName());
 
                 if (potioneffect.getAmplifier() == 1)