diff --git a/apps/api/src/services/terminal_session.py b/apps/api/src/services/terminal_session.py
index 755722d..6b5d349 100644
--- a/apps/api/src/services/terminal_session.py
+++ b/apps/api/src/services/terminal_session.py
@@ -142,6 +142,11 @@ class TerminalSession:
         if self._closed:
             logger.warning("Cannot resize: session is closed")
             return
+        
+        # Only resize if dimensions actually changed
+        if self._cols == cols and self._rows == rows:
+            return
+            
         self._cols = cols
         self._rows = rows
         logger.info(f"resize() called for session {self.session_id}: {cols}x{rows}")
@@ -149,12 +154,9 @@ class TerminalSession:
         
         # Docker exec doesn't forward PTY resize to the container process,
         # so we need to explicitly set the size inside the container shell.
-        # Only do this on the first resize to avoid interfering with user input.
-        if not getattr(self, '_stty_sent', False):
-            self._stty_sent = True
-            stty_cmd = f"stty cols {cols} rows {rows}\n".encode()
-            await self.write_input(stty_cmd)
-            logger.info(f"Sent stty command to container for session {self.session_id}: {cols}x{rows}")
+        stty_cmd = f"stty cols {cols} rows {rows}\n".encode()
+        await self.write_input(stty_cmd)
+        logger.info(f"Sent stty command to container for session {self.session_id}: {cols}x{rows}")
 
     async def reset(self) -> None:
         """Reset the session by killing the process and clearing state."""