Merge pull request #1985 from HEXRD/fix-mouse-scroll-rectangle-masks

Fix drawing raw rectangle masks after mouse scroll

Author: psavery

hexrdgui/masking/mask_regions_dialog.py

@@ -319,7 +319,8 @@ def create_masks(self) -> None:
         masks_changed_signal[self.image_mode].emit()
 
     def button_released(self, event: MouseEvent) -> None:
-        assert self.interactive_template is not None
+        if self.interactive_template is None:
+            return
         if not self.press or not self.interactive_template.static_mode:
             return