Fix creative tab scrolling being broken

Author: Siphalor

src/main/java/de/siphalor/mousewheelie/client/mixin/gui/screen/MixinCreativeInventoryScreen.java

@@ -55,9 +55,11 @@ public MixinCreativeInventoryScreen(CreativeInventoryScreen.CreativeScreenHandle
 	@Override
 	public ScrollAction mouseWheelie_onMouseScrolledSpecial(double mouseX, double mouseY, double scrollAmount) {
 		if (MWConfig.scrolling.scrollCreativeMenuTabs) {
-			boolean yOverTopTabs = (-32 <= mouseY && mouseY <= 0);
-			boolean yOverBottomTabs = (this.backgroundHeight <= mouseY && mouseY <= this.backgroundHeight + 32);
-			boolean overTabs = (0 <= mouseX && mouseX <= this.backgroundWidth) && (yOverTopTabs || yOverBottomTabs);
+			double relMouseY = mouseY - this.y;
+			double relMouseX = mouseX - this.x;
+			boolean yOverTopTabs = (-32 <= relMouseY && relMouseY <= 0);
+			boolean yOverBottomTabs = (this.backgroundHeight <= relMouseY && relMouseY <= this.backgroundHeight + 32);
+			boolean overTabs = (0 <= relMouseX && relMouseX <= this.backgroundWidth) && (yOverTopTabs || yOverBottomTabs);
 
 			if (overTabs) {
 				if (FabricLoader.getInstance().isModLoaded("fabric") || FabricLoader.getInstance().isModLoaded("fabric-item-groups")) {