diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e177e399..56312001 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,7 +39,7 @@ jobs:
         java-version: 21
         java-package: jre
     - name: Install xi
-      run: sudo apt-get install -y libxi-dev libcairo2-dev libjpeg-dev libpango1.0-dev libgif-dev build-essential libglu1-mesa-dev libglew-dev
+      run: sudo apt-get update && sudo apt-get install -y libxi-dev libcairo2-dev libjpeg-dev libpango1.0-dev libgif-dev build-essential libglu1-mesa-dev libglew-dev
     - run: npm install
     - run: npm run jestTest -- -t ${{ matrix.mcVersion }}
     - uses: actions/upload-artifact@v4
diff --git a/lib/index.js b/lib/index.js
index baf11fe9..62493f17 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -54,7 +54,7 @@ socket.on('version', (version) => {
       viewer.setFirstPersonCamera(pos, yaw, pitch)
       return
     }
-    if (pos.y > 0 && firstPositionUpdate) {
+    if (firstPositionUpdate) {
       controls.target.set(pos.x, pos.y, pos.z)
       viewer.camera.position.set(pos.x, pos.y + 20, pos.z + 20)
       controls.update()
diff --git a/package.json b/package.json
index 6cfbc510..3c28c586 100644
--- a/package.json
+++ b/package.json
@@ -25,9 +25,9 @@
     "@tweenjs/tween.js": "^23.1.1",
     "compression": "^1.7.4",
     "express": "^4.17.1",
-    "minecraft-data": "^3.0.0",
+    "minecraft-data": "github:mneuhaus/node-minecraft-data#add-26.1.2-data-wrapper",
     "prismarine-block": "^1.7.3",
-    "prismarine-chunk": "^1.22.0",
+    "prismarine-chunk": "github:mneuhaus/prismarine-chunk#pc26_1_2-fluid-count",
     "prismarine-world": "^3.3.1",
     "socket.io": "^4.0.0",
     "socket.io-client": "^4.0.0",
@@ -42,7 +42,7 @@
     "fs-extra": "^11.0.0",
     "jest": "^29.7.0",
     "jest-puppeteer": "^11.0.0",
-    "minecraft-assets": "^1.9.0",
+    "minecraft-assets": "github:mneuhaus/node-minecraft-assets#add-26.1.2-assets",
     "minecraft-wrap": "^1.3.0",
     "minecrafthawkeye": "^1.2.5",
     "mineflayer": "^4.0.0",
diff --git a/viewer/lib/modelsBuilder.js b/viewer/lib/modelsBuilder.js
index a7736c6b..e35d31e4 100644
--- a/viewer/lib/modelsBuilder.js
+++ b/viewer/lib/modelsBuilder.js
@@ -1,8 +1,23 @@
 function cleanupBlockName (name) {
+  name = getTextureName(name)
+  if (name === null) return 'missing_texture'
   if (name.startsWith('block') || name.startsWith('minecraft:block')) return name.split('/')[1]
   return name
 }
 
+function getTextureName (texture) {
+  if (texture === null || texture === undefined) return null
+  if (typeof texture === 'string') return texture
+  if (typeof texture.sprite === 'string') return texture.sprite
+  if (typeof texture.texture === 'string') return texture.texture
+  return null
+}
+
+function resolveTexture (texture, texturesJson) {
+  const name = cleanupBlockName(texture)
+  return JSON.parse(JSON.stringify(texturesJson[name] || texturesJson.missing_texture))
+}
+
 function getModel (name, blocksModels) {
   name = cleanupBlockName(name)
   const data = blocksModels[name]
@@ -36,32 +51,30 @@ function getModel (name, blocksModels) {
 function prepareModel (model, texturesJson) {
   // resolve texture names eg west: #all -> blocks/stone
   for (const tex in model.textures) {
-    let root = model.textures[tex]
-    while (root.charAt(0) === '#') {
-      root = model.textures[root.substr(1)]
+    let root = getTextureName(model.textures[tex])
+    while (root && root.charAt(0) === '#') {
+      root = getTextureName(model.textures[root.substr(1)])
     }
-    model.textures[tex] = root
+    model.textures[tex] = root || 'missing_texture'
   }
   for (const tex in model.textures) {
-    let name = model.textures[tex]
-    name = cleanupBlockName(name)
-    model.textures[tex] = texturesJson[name]
+    model.textures[tex] = resolveTexture(model.textures[tex], texturesJson)
   }
   for (const elem of model.elements) {
     for (const sideName of Object.keys(elem.faces)) {
       const face = elem.faces[sideName]
+      const faceTextureName = getTextureName(face.texture)
 
-      if (face.texture.charAt(0) === '#') {
-        face.texture = JSON.parse(JSON.stringify(model.textures[face.texture.substr(1)]))
+      if (faceTextureName && faceTextureName.charAt(0) === '#') {
+        face.texture = JSON.parse(JSON.stringify(model.textures[faceTextureName.substr(1)]))
       } else if (
-        !(cleanupBlockName(face.texture) in texturesJson) &&
-        face.texture in model.textures
+        !(cleanupBlockName(faceTextureName) in texturesJson) &&
+        faceTextureName &&
+        faceTextureName in model.textures
       ) {
-        face.texture = JSON.parse(JSON.stringify(model.textures[face.texture]))
+        face.texture = JSON.parse(JSON.stringify(model.textures[faceTextureName]))
       } else {
-        let name = face.texture
-        name = cleanupBlockName(name)
-        face.texture = JSON.parse(JSON.stringify(texturesJson[name]))
+        face.texture = resolveTexture(faceTextureName, texturesJson)
       }
 
       let uv = face.uv
diff --git a/viewer/lib/version.js b/viewer/lib/version.js
index 39e3ad86..a9b12c57 100644
--- a/viewer/lib/version.js
+++ b/viewer/lib/version.js
@@ -1,4 +1,4 @@
-const supportedVersions = ['1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.1', '1.16.4', '1.17.1', '1.18.1', '1.19', '1.20.1', '1.21.1', '1.21.4']
+const supportedVersions = ['1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.1', '1.16.4', '1.17.1', '1.18.1', '1.19', '1.20.1', '1.21.1', '1.21.4', '1.21.11', '26.1.2']
 
 const lastOfMajor = {}
 for (const version of supportedVersions) {
diff --git a/viewer/lib/worker.js b/viewer/lib/worker.js
index b7431677..d5584f08 100644
--- a/viewer/lib/worker.js
+++ b/viewer/lib/worker.js
@@ -32,7 +32,7 @@ function setSectionDirty (pos, value = true) {
   if (!value) {
     delete dirtySections[key]
     postMessage({ type: 'sectionFinished', key })
-  } else if (chunk && chunk.sections[Math.floor(y / 16)]) {
+  } else if (hasSection(chunk, y)) {
     dirtySections[key] = value
   } else {
     postMessage({ type: 'sectionFinished', key })
@@ -74,7 +74,7 @@ setInterval(() => {
     y = parseInt(y, 10)
     z = parseInt(z, 10)
     const chunk = world.getColumn(x, z)
-    if (chunk && chunk.sections[Math.floor(y / 16)]) {
+    if (hasSection(chunk, y)) {
       delete dirtySections[key]
       const geometry = getSectionGeometry(x, y, z, world, blocksStates)
       const transferable = [geometry.positions.buffer, geometry.normals.buffer, geometry.colors.buffer, geometry.uvs.buffer]
@@ -85,3 +85,9 @@ setInterval(() => {
   // const time = performance.now() - start
   // console.log(`Processed ${sections.length} sections in ${time} ms (${time / sections.length} ms/section)`)
 }, 50)
+
+function hasSection (chunk, y) {
+  if (!chunk) return false
+  const minY = chunk.minY ?? 0
+  return Boolean(chunk.sections[(y - minY) >> 4])
+}
diff --git a/viewer/lib/worldrenderer.js b/viewer/lib/worldrenderer.js
index 744224a7..6830cb55 100644
--- a/viewer/lib/worldrenderer.js
+++ b/viewer/lib/worldrenderer.js
@@ -16,6 +16,7 @@ class WorldRenderer {
     this.version = undefined
     this.scene = scene
     this.loadedChunks = {}
+    this.loadedChunkRanges = {}
     this.sectionsOutstanding = new Set()
     this.renderUpdateEmitter = new EventEmitter()
     this.blockStatesData = undefined
@@ -70,6 +71,8 @@ class WorldRenderer {
       this.scene.remove(mesh)
     }
     this.sectionMeshs = {}
+    this.loadedChunks = {}
+    this.loadedChunkRanges = {}
     for (const worker of this.workers) {
       worker.postMessage({ type: 'reset' })
     }
@@ -109,10 +112,12 @@ class WorldRenderer {
 
   addColumn (x, z, chunk) {
     this.loadedChunks[`${x},${z}`] = true
+    const range = getChunkVerticalRange(chunk)
+    this.loadedChunkRanges[`${x},${z}`] = range
     for (const worker of this.workers) {
       worker.postMessage({ type: 'chunk', x, z, chunk })
     }
-    for (let y = 0; y < 256; y += 16) {
+    for (let y = range.minY; y < range.maxY; y += 16) {
       const loc = new Vec3(x, y, z)
       this.setSectionDirty(loc)
       this.setSectionDirty(loc.offset(-16, 0, 0))
@@ -124,10 +129,12 @@ class WorldRenderer {
 
   removeColumn (x, z) {
     delete this.loadedChunks[`${x},${z}`]
+    const range = this.loadedChunkRanges[`${x},${z}`] || { minY: 0, maxY: 256 }
+    delete this.loadedChunkRanges[`${x},${z}`]
     for (const worker of this.workers) {
       worker.postMessage({ type: 'unloadChunk', x, z })
     }
-    for (let y = 0; y < 256; y += 16) {
+    for (let y = range.minY; y < range.maxY; y += 16) {
       this.setSectionDirty(new Vec3(x, y, z), false)
       const key = `${x},${y},${z}`
       const mesh = this.sectionMeshs[key]
@@ -181,4 +188,12 @@ class WorldRenderer {
   }
 }
 
+function getChunkVerticalRange (chunk) {
+  if (!chunk) return { minY: 0, maxY: 256 }
+  const data = typeof chunk === 'string' ? JSON.parse(chunk) : chunk
+  const minY = data.minY ?? 0
+  const worldHeight = data.worldHeight ?? 256
+  return { minY, maxY: minY + worldHeight }
+}
+
 module.exports = { WorldRenderer }
diff --git a/webpack.config.js b/webpack.config.js
index d1577c9d..13b2c0bf 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -8,6 +8,7 @@ const path = require('path')
 const blockedIndexFiles = ['blocksB2J', 'blocksJ2B', 'blockMappings', 'steve', 'recipes']
 const allowedWorkerFiles = ['blocks', 'blockCollisionShapes', 'tints', 'blockStates',
   'biomes', 'features', 'version', 'legacy', 'versions', 'version', 'protocolVersions']
+const allowedWorkerBedrockFiles = ['legacy', 'versions', 'protocolVersions']
 
 const indexConfig = {
   entry: './lib/index.js',
@@ -18,6 +19,7 @@ const indexConfig = {
   },
   resolve: {
     fallback: {
+      assert: require.resolve('assert/'),
       zlib: false
     }
   },
@@ -59,6 +61,7 @@ const workerConfig = {
   },
   resolve: {
     fallback: {
+      assert: require.resolve('assert/'),
       zlib: false
     }
   },
@@ -74,7 +77,12 @@ const workerConfig = {
   externals: [
     function (req, cb) {
       if (req.context.includes('minecraft-data') && req.request.endsWith('.json')) {
+        const requestPath = `${req.context}/${req.request}`
         const fileName = req.request.split('/').pop().replace('.json', '')
+        if (requestPath.match(/[\\/]data[\\/]bedrock[\\/]/) && !allowedWorkerBedrockFiles.includes(fileName)) {
+          cb(null, [])
+          return
+        }
         if (!allowedWorkerFiles.includes(fileName)) {
           cb(null, [])
           return