diff --git a/app/qt/main_window.py b/app/qt/main_window.py
index 39b0d48..988a29e 100644
--- a/app/qt/main_window.py
+++ b/app/qt/main_window.py
@@ -362,6 +362,10 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         container_layout.addWidget(self.title_bar)
 
         self.content = QtWidgets.QWidget()
+        self.processor = QtImageProcessor()
+        self.processor.set_defaults(defaults)
+        self.processor.reset_exclusions_on_switch = reset_exclusions
+
         self.content_layout = QtWidgets.QVBoxLayout(self.content)
         self.content_layout.setContentsMargins(24, 24, 24, 24)
         self.content_layout.setSpacing(18)
@@ -381,9 +385,6 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self._toolbar_actions: Dict[str, Callable[[], None]] = {}
         self._register_default_actions()
 
-        self.processor = QtImageProcessor()
-        self.processor.set_defaults(defaults)
-        self.processor.reset_exclusions_on_switch = reset_exclusions
         self._sync_sliders_from_processor()
         self._update_colour_display(DEFAULT_COLOUR, self._t("palette.current"))