diff --git a/glue/viewers/profile/layer_artist.py b/glue/viewers/profile/layer_artist.py
index 97dd105aa..e9dbf76ac 100644
--- a/glue/viewers/profile/layer_artist.py
+++ b/glue/viewers/profile/layer_artist.py
@@ -41,15 +41,9 @@ def _calculate_profile(self, reset=False):
             self._calculate_profile_postthread()
 
     def _calculate_profile_thread(self, reset=False):
-        # We need to ignore any warnings that happen inside the thread
-        # otherwise the thread tries to send these to the glue logger (which
-        # uses Qt), which then results in this kind of error:
-        # QObject::connect: Cannot queue arguments of type 'QTextCursor'
-        with warnings.catch_warnings():
-            warnings.simplefilter("ignore")
-            if reset:
-                self.state.reset_cache()
-            self.state.update_profile(update_limits=False)
+        if reset:
+            self.state.reset_cache()
+        self.state.update_profile(update_limits=True)
 
     def _calculate_profile_postthread(self):
 
diff --git a/glue/viewers/profile/qt/options_widget.py b/glue/viewers/profile/qt/options_widget.py
index 0c750b2c6..64a1186dc 100644
--- a/glue/viewers/profile/qt/options_widget.py
+++ b/glue/viewers/profile/qt/options_widget.py
@@ -54,9 +54,10 @@ def _on_function_change(self, *args):
         else:
             if self.profile_slice_helper:
                 self.profile_slice_helper.remove()
+                # Has to be set to None otherwise it will re-appear for other functions
+                self.profile_slice_helper = None
 
     def _on_attribute_change(self, *args):
-
         if (self.viewer_state.reference_data is None or
                 self.viewer_state.x_att_pixel is None or
                 self.viewer_state.x_att is self.viewer_state.x_att_pixel):
@@ -64,12 +65,9 @@ def _on_attribute_change(self, *args):
             return
 
         if self.viewer_state.function != 'slice':
-
             world_warning = len(dependent_axes(self.viewer_state.reference_data.coords,
                                                self.viewer_state.x_att_pixel.axis)) > 1
-
             self.ui.text_warning.hide()
-
             if world_warning:
                 self.ui.text_warning.show()
                 self.ui.text_warning.setText(WARNING_TEXT.format(label=self.viewer_state.x_att.label))