Use the reject slot for dialogs since close is not actually a slot

novelwriter/dialogs/about.py

@@ -85,7 +85,7 @@ class GuiAbout(NDialog):
 
         # Buttons
         self.btnBox = QDialogButtonBox(QtDialogClose, self)
-        self.btnBox.rejected.connect(self.close)
+        self.btnBox.rejected.connect(self.reject)
 
         # Assemble
         self.innerBox = QVBoxLayout()

novelwriter/dialogs/projectsettings.py

@@ -92,7 +92,7 @@ class GuiProjectSettings(NDialog):
         # Buttons
         self.buttonBox = QDialogButtonBox(QtDialogSave | QtDialogCancel, self)
         self.buttonBox.accepted.connect(self._doSave)
-        self.buttonBox.rejected.connect(self.close)
+        self.buttonBox.rejected.connect(self.reject)
 
         # Content
         SHARED.project.countStatus()

novelwriter/dialogs/wordlist.py

@@ -109,7 +109,7 @@ class GuiWordList(NDialog):
         # Buttons
         self.buttonBox = QDialogButtonBox(QtDialogSave | QtDialogClose, self)
         self.buttonBox.accepted.connect(self._doSave)
-        self.buttonBox.rejected.connect(self.close)
+        self.buttonBox.rejected.connect(self.reject)
 
         # Assemble
         self.outerBox = QVBoxLayout()