diff --git a/src/textual_webterm/local_server.py b/src/textual_webterm/local_server.py
index c7c1a2c..ca38d94 100644
--- a/src/textual_webterm/local_server.py
+++ b/src/textual_webterm/local_server.py
@@ -589,6 +589,10 @@ class LocalServer:
                     for char in row_data:
                         char_data = char["data"]
 
+                        # Skip empty placeholder cells (after wide characters)
+                        if not char_data:
+                            continue
+
                         # Build Rich style from pyte character attributes
                         # Convert pyte color names to Rich-compatible format
                         style_kwargs = {}