diff --git a/renderer/viewer/three/renderSlot.ts b/renderer/viewer/three/renderSlot.ts
index d82e58e3..321633eb 100644
--- a/renderer/viewer/three/renderSlot.ts
+++ b/renderer/viewer/three/renderSlot.ts
@@ -10,11 +10,11 @@ export type ResolvedItemModelRender = {
 
 export const renderSlot = (model: ResolvedItemModelRender, resourcesManager: ResourcesManagerCommon, debugIsQuickbar = false, fullBlockModelSupport = false): {
   texture: string,
-  blockData?: Record<string, { slice, path }> & { resolvedModel: BlockModel },
-  scale?: number,
-  slice?: number[],
-  modelName?: string,
-} | undefined => {
+  blockData: Record<string, { slice, path }> & { resolvedModel: BlockModel } | null,
+  scale: number | null,
+  slice: number[] | null,
+  modelName: string | null,
+} => {
   let itemModelName = model.modelName
   const isItem = loadedData.itemsByName[itemModelName]
 
@@ -37,6 +37,8 @@ export const renderSlot = (model: ResolvedItemModelRender, resourcesManager: Res
         texture: 'gui',
         slice: [x, y, atlas.tileSize, atlas.tileSize],
         scale: 0.25,
+        blockData: null,
+        modelName: null
       }
     }
   }
@@ -63,14 +65,18 @@ export const renderSlot = (model: ResolvedItemModelRender, resourcesManager: Res
     return {
       texture: itemTexture.type,
       slice: itemTexture.slice,
-      modelName: itemModelName
+      modelName: itemModelName,
+      blockData: null,
+      scale: null
     }
   } else {
     // is block
     return {
       texture: 'blocks',
       blockData: itemTexture,
-      modelName: itemModelName
+      modelName: itemModelName,
+      slice: null,
+      scale: null
     }
   }
 }
diff --git a/src/inventoryWindows.ts b/src/inventoryWindows.ts
index bc7dcbaf..a9f89d1b 100644
--- a/src/inventoryWindows.ts
+++ b/src/inventoryWindows.ts
@@ -259,6 +259,7 @@ export const upInventoryItems = (isInventory: boolean, invWindow = lastWindow) =
   // inv.pwindow.inv.slots[2].blockData = getBlockData('dirt')
   const customSlots = mapSlots((isInventory ? bot.inventory : bot.currentWindow)!.slots)
   invWindow.pwindow.setSlots(customSlots)
+  return customSlots
 }
 
 export const onModalClose = (callback: () => any) => {
diff --git a/src/react/HotbarRenderApp.tsx b/src/react/HotbarRenderApp.tsx
index 6b6e3207..c782e6ef 100644
--- a/src/react/HotbarRenderApp.tsx
+++ b/src/react/HotbarRenderApp.tsx
@@ -115,7 +115,7 @@ const HotbarInner = () => {
     container.current.appendChild(inv.canvas)
     const upHotbarItems = () => {
       if (!appViewer.resourcesManager?.itemsAtlasParser) return
-      upInventoryItems(true, inv)
+      globalThis.debugHotbarItems = upInventoryItems(true, inv)
     }
 
     canvasManager.canvas.onclick = (e) => {
@@ -127,6 +127,7 @@ const HotbarInner = () => {
       }
     }
 
+    globalThis.debugUpHotbarItems = upHotbarItems
     upHotbarItems()
     bot.inventory.on('updateSlot', upHotbarItems)
     appViewer.resourcesManager.on('assetsTexturesUpdated', upHotbarItems)