diff --git a/src/AcDream.App/Rendering/Wb/EnvCellRenderer.cs b/src/AcDream.App/Rendering/Wb/EnvCellRenderer.cs
index 085c371..ad3e4e1 100644
--- a/src/AcDream.App/Rendering/Wb/EnvCellRenderer.cs
+++ b/src/AcDream.App/Rendering/Wb/EnvCellRenderer.cs
@@ -81,16 +81,6 @@ public sealed unsafe class EnvCellRenderer : IDisposable
     private static uint _currentVao;
     private static CullMode? _currentCullMode;
 
-    // Phase A8 A/B diagnostic (2026-05-28 visual-gate-#2 follow-up):
-    // ACDREAM_A8_DISABLE_CULL=1 forces every batch's effective CullMode to
-    // None (no face culling). Used to isolate whether the missing-floor
-    // symptom is caused by polygon-winding+CullMode interaction or by
-    // something else (lighting, depth, alpha). If the floor appears with
-    // this set, cull/winding is the bug. If not, look elsewhere. Static
-    // because it's read once at startup; no need to re-query per draw.
-    private static readonly bool _forceCullModeNone =
-        string.Equals(Environment.GetEnvironmentVariable("ACDREAM_A8_DISABLE_CULL"), "1", StringComparison.Ordinal);
-
     public bool NeedsPrepare { get; private set; } = true;
     public bool IsDisposed { get; private set; }
 
@@ -825,6 +815,22 @@ public sealed unsafe class EnvCellRenderer : IDisposable
             _gl.BindVertexArray(0);
             _currentVao = 0;
 
+            // Phase A8 fix (2026-05-28 visual-gate-#3 follow-up): explicitly
+            // restore cull-back at exit. The Landblock→None override above
+            // can leave cull DISABLED if the last batch's CullMode was
+            // Landblock — which would leak into the subsequent dispatcher
+            // draws (IndoorPass building shells, then LiveDynamic chars +
+            // NPCs + doors), making them all render see-through (no
+            // back-face cull). The see-through-head symptom in the
+            // ACDREAM_A8_DISABLE_CULL=1 A/B test was caused exactly by
+            // this state leak. Re-enabling cull here restores the
+            // dispatcher's expected default and updates our static cache
+            // so the next Render call's first SetCullMode comparison is
+            // correct.
+            _gl.Enable(EnableCap.CullFace);
+            _gl.CullFace(TriangleFace.Back);
+            _currentCullMode = CullMode.CounterClockwise;
+
             // Update frame stats for probe emission at the call site.
             _lastFrameStats.CellsRendered = filter?.Count ?? snapshot.BatchedByCell.Count;
             _lastFrameStats.TrianglesDrawn = 0;
@@ -997,10 +1003,24 @@ public sealed unsafe class EnvCellRenderer : IDisposable
         foreach (var group in batchesByCullMode)
         {
             var cullMode = (CullMode)(group.Key % 4);
-            // A/B diagnostic: ACDREAM_A8_DISABLE_CULL=1 overrides every batch
-            // to no-culling. Reveals whether floor-missing is a cull/winding
-            // bug or something else.
-            if (_forceCullModeNone) cullMode = CullMode.None;
+            // Phase A8 fix (2026-05-28 visual-gate-#3 evidence): override
+            // CullMode.Landblock to None for cell-mesh batches. WB sets
+            // glFrontFace(CW) globally (GameScene.cs:843) so its CullMode
+            // mapping (Landblock→Back) culls the correct side; we set
+            // glFrontFace(CCW) in WbDrawDispatcher (line 1056) so the
+            // mapping would cull the OPPOSITE side, hiding cell floors.
+            // Cell-mesh polys with CullMode.Landblock represent the floor +
+            // walls + ceiling of a single room — they face different
+            // directions but share one CullMode value, so a single cull
+            // setting can't be correct for all of them. The retail-faithful
+            // approach is double-sided rendering for cell polys (cull off),
+            // matching what the cull-disable A/B diagnostic empirically
+            // confirmed (floor visible with cull off in visual-gate-#3).
+            // CullMode.Landblock is only ever assigned in this codebase by
+            // PrepareCellStructMeshData (cell polys) — terrain has its own
+            // renderer that doesn't go through this code path — so this
+            // override is scoped exactly right.
+            if (cullMode == CullMode.Landblock) cullMode = CullMode.None;
             if (_currentCullMode != cullMode)
             {
                 SetCullMode(cullMode);