diff --git a/recOrder/plugin/main_widget.py b/recOrder/plugin/main_widget.py
index 398ef2b6..8b4559b0 100644
--- a/recOrder/plugin/main_widget.py
+++ b/recOrder/plugin/main_widget.py
@@ -529,7 +529,6 @@ def _promote_slider_offline(self, ui_slider, range_):
         ui_slider.setRange(range_[0], range_[1])
 
     def _promote_slider_init(self):
-
         """
         Used to promote the Display Tab sliders from QSlider to QDoubeRangeSlider with superqt
         Returns
@@ -1174,7 +1173,6 @@ def handle_bire_image_update(self, value: NDArray):
 
     @Slot(object)
     def handle_phase_image_update(self, value):
-
         name = "Phase2D" if self.acq_mode == "2D" else "Phase3D"
 
         # Add new layer if none exists, otherwise update layer data
@@ -1845,6 +1843,11 @@ def load_calibration(self):
         def update_extinction(extinction):
             self.calib.extinction_ratio = float(extinction)
 
+        # FIXME: for 1.0.0 we'd like to avoid MM call in the main thread
+        # Make sure Live Mode is off
+        if self.calib.snap_manager.getIsLiveModeOn():
+            self.calib.snap_manager.setLiveModeOn(False)
+
         # initialize worker properties for multi-threading
         self.ui.qbutton_stop_calib.clicked.connect(self.worker.quit)
         self.worker.yielded.connect(self.ui.le_extinction.setText)
@@ -1896,6 +1899,7 @@ def run_calibration(self):
             self.directory, "calibration_metadata.txt"
         )
 
+        # FIXME: for 1.0.0 we'd like to avoid MM call in the main thread
         # Make sure Live Mode is off
         if self.calib.snap_manager.getIsLiveModeOn():
             self.calib.snap_manager.setLiveModeOn(False)
@@ -2290,7 +2294,6 @@ def save_config(self):
 
     @Slot(tuple)
     def update_dims(self, dims):
-
         if not self.pause_updates:
             self.viewer.dims.set_current_step(0, dims[0])
             self.viewer.dims.set_current_step(1, dims[1])
@@ -2299,7 +2302,6 @@ def update_dims(self, dims):
             pass
 
     def _open_file_dialog(self, default_path, type):
-
         return self._open_dialog("select a directory", str(default_path), type)
 
     def _open_dialog(self, title, ref, type):