diff --git a/novelwriter/common.py b/novelwriter/common.py
index 988b6c78..86761b48 100644
--- a/novelwriter/common.py
+++ b/novelwriter/common.py
@@ -46,9 +46,9 @@ from novelwriter.constants import nwConst, nwUnicode
 logger = logging.getLogger(__name__)
 
 
-# =============================================================================================== #
+##
 #  Checker Functions
-# =============================================================================================== #
+##
 
 def checkStringNone(value: Any, default: str | None) -> str | None:
     """Check if a variable is a string or a None."""
@@ -131,9 +131,9 @@ def checkPath(value: Any, default: Path) -> Path:
     return default
 
 
-# =============================================================================================== #
+##
 #  Validator Functions
-# =============================================================================================== #
+##
 
 def isHandle(value: Any) -> bool:
     """Check if a string is a valid novelWriter handle.
@@ -204,9 +204,9 @@ def checkIntTuple(value: int, valid: tuple | list | set, default: int) -> int:
     return default
 
 
-# =============================================================================================== #
+##
 #  Formatting Functions
-# =============================================================================================== #
+##
 
 def formatInt(value: int) -> str:
     """Formats an integer with k, M, G etc."""
@@ -250,9 +250,9 @@ def formatTime(t: int) -> str:
     return "ERROR"
 
 
-# =============================================================================================== #
+##
 #  String Functions
-# =============================================================================================== #
+##
 
 def simplified(text: str) -> str:
     """Take a string and strip leading and trailing whitespaces, and
@@ -371,9 +371,9 @@ def numberToRoman(value: int, toLower: bool = False) -> str:
     return roman.lower() if toLower else roman
 
 
-# =============================================================================================== #
+##
 #  Encoder Functions
-# =============================================================================================== #
+##
 
 def jsonEncode(data: dict | list | tuple, n: int = 0, nmax: int = 0) -> str:
     """Encode a dictionary, list or tuple as a json object or array, and
@@ -463,9 +463,9 @@ def xmlIndent(tree: ET.Element | ET.ElementTree) -> None:
     return
 
 
-# =============================================================================================== #
+##
 #  File and File System Functions
-# =============================================================================================== #
+##
 
 def readTextFile(path: str | Path) -> str:
     """Read the content of a text file in a robust manner."""
@@ -507,9 +507,9 @@ def openExternalPath(path: Path) -> bool:
     return False
 
 
-# =============================================================================================== #
+##
 #  Classes
-# =============================================================================================== #
+##
 
 class NWConfigParser(ConfigParser):
     """Common: Adapted Config Parser
diff --git a/novelwriter/guimain.py b/novelwriter/guimain.py
index de9544e8..d6c39dc9 100644
--- a/novelwriter/guimain.py
+++ b/novelwriter/guimain.py
@@ -899,7 +899,8 @@ class GuiMain(QMainWindow):
     def showBuildManuscriptDialog(self) -> None:
         """Open the build manuscript dialog."""
         if SHARED.hasProject:
-            dialog = GuiManuscript(self)
+            if (dialog := SHARED.findTopLevelWidget(GuiManuscript)) is None:
+                dialog = GuiManuscript(self)
             dialog.setModal(False)
             dialog.show()
             dialog.raise_()
@@ -920,7 +921,8 @@ class GuiMain(QMainWindow):
     def showWritingStatsDialog(self) -> None:
         """Open the session stats dialog."""
         if SHARED.hasProject:
-            dialog = GuiWritingStats(self)
+            if (dialog := SHARED.findTopLevelWidget(GuiWritingStats)) is None:
+                dialog = GuiWritingStats(self)
             dialog.setModal(False)
             dialog.show()
             dialog.raise_()
diff --git a/novelwriter/shared.py b/novelwriter/shared.py
index 5e134646..871639c6 100644
--- a/novelwriter/shared.py
+++ b/novelwriter/shared.py
@@ -27,7 +27,7 @@ from __future__ import annotations
 import logging
 
 from time import time
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, TypeVar
 from pathlib import Path
 
 from PyQt5.QtCore import QObject, QRunnable, QThreadPool, pyqtSignal
@@ -42,6 +42,8 @@ if TYPE_CHECKING:  # pragma: no cover
 
 logger = logging.getLogger(__name__)
 
+NWWidget = TypeVar("NWWidget", bound=QWidget)
+
 
 class SharedData(QObject):
 
@@ -215,6 +217,13 @@ class SharedData(QObject):
         QThreadPool.globalInstance().start(runnable, priority=priority)
         return
 
+    def findTopLevelWidget(self, kind: type[NWWidget]) -> NWWidget | None:
+        """Find a top level widget."""
+        for widget in self.mainGui.children():
+            if isinstance(widget, kind):
+                return widget
+        return None
+
     ##
     #  Signal Proxy
     ##