diff --git a/desktop_env/server/main.py b/desktop_env/server/main.py
index 357664c..83d1c67 100644
--- a/desktop_env/server/main.py
+++ b/desktop_env/server/main.py
@@ -182,6 +182,11 @@ _accessibility_ns_map = {"st": "uri:deskat:state.at-spi.gnome.org"
 
 
 def _create_atspi_node(node: Accessible, depth: int, flag: Optional[str] = None) -> _Element:
+    if node.getRoleName() == "document spreadsheet":
+        flag = "calc"
+    if node.getRoleName() == "application" and node.name=="Thunderbird":
+        flag = "thunderbird"
+
     attribute_dict: Dict[str, Any] = {"name": node.name}
 
     #  States {{{ # 
@@ -247,6 +252,12 @@ def _create_atspi_node(node: Accessible, depth: int, flag: Optional[str] = None)
         # only text shown on current screen is available
         # attribute_dict["txt:text"] = text_obj.getText(0, text_obj.characterCount)
         text: str = text_obj.getText(0, text_obj.characterCount)
+        if flag=="thunderbird":
+            # appeard in thunderbird (uFFFC), "Object Replacement Character" in
+            # Unicode, "used as placeholder in text for an otherwise
+            # unspecified object; uFFFD is another "Replacement Character",
+            # just in case
+            text = text.replace("\ufffc", "").replace("\ufffd", "")
     #  }}} Text # 
 
     #  Selection {{{ # 
@@ -303,18 +314,11 @@ def _create_atspi_node(node: Accessible, depth: int, flag: Optional[str] = None)
     if "text" in locals() and len(text) > 0:
         xml_node.text = text
 
-    # HACK: libreoffice has a problem -> billions of children for parent with RoleName "document spreadsheet"
-    #if node.getRoleName() == "document spreadsheet":
-        #return xml_node
     # HYPERPARAMETER
     if depth==50:
         logger.warning("Max depth reached")
         return xml_node
 
-    # HACK: libreoffice has a problem -> billions of children for parent with RoleName "document spreadsheet"
-    if node.getRoleName() == "document spreadsheet":
-        flag = "calc"
-
     if flag=="calc" and node_role_name=="table":
         # Maximum column: 1024 if ver<=7.3 else 16384
         # Maximum row: 104 8576
diff --git a/mm_agents/gpt_4v_agent.py b/mm_agents/gpt_4v_agent.py
index 423e554..323e08f 100644
--- a/mm_agents/gpt_4v_agent.py
+++ b/mm_agents/gpt_4v_agent.py
@@ -33,12 +33,13 @@ def linearize_accessibility_tree(accessibility_tree):
     leaf_nodes = find_leaf_nodes(accessibility_tree)
     filtered_nodes = filter_nodes(leaf_nodes)
 
-    linearized_accessibility_tree = "tag\ttext\tposition\tsize\n"
+    linearized_accessibility_tree = "tag\tname\ttext\tposition\tsize\n"
     # Linearize the accessibility tree nodes into a table format
 
     for node in filtered_nodes:
         linearized_accessibility_tree += node.tag + "\t"
         linearized_accessibility_tree += node.attrib.get('name') + "\t"
+        linearized_accessibility_tree += (node.text if '"' not in node.text else '"{:}"'.format(node.text.replace('"', '""'))) + "\t"
         linearized_accessibility_tree += node.attrib.get(
             '{uri:deskat:component.at-spi.gnome.org}screencoord') + "\t"
         linearized_accessibility_tree += node.attrib.get('{uri:deskat:component.at-spi.gnome.org}size') + "\n"