Test to see if this has any impact on reloading the add-on.

src/bonsai/bonsai/bim/module/spatial/decorator.py

@@ -55,6 +55,8 @@ class GridDecorator:
         batch.draw(shader)
 
     def draw_text(self, context):
+        if not tool.Blender.is_addon_enabled():
+            return
         self.addon_prefs = tool.Blender.get_addon_preferences()
         selected_elements_color = self.addon_prefs.decorator_color_selected
         unselected_elements_color = self.addon_prefs.decorator_color_unselected
@@ -94,6 +96,8 @@ class GridDecorator:
         blf.disable(font_id, blf.SHADOW)
 
     def draw(self, context):
+        if not tool.Blender.is_addon_enabled():
+            return
         self.addon_prefs = tool.Blender.get_addon_preferences()
         selected_elements_color = self.addon_prefs.decorator_color_selected
         unselected_elements_color = self.addon_prefs.decorator_color_unselected

src/bonsai/bonsai/tool/blender.py

@@ -1322,6 +1322,10 @@ class Blender(bonsai.core.tool.Blender):
         name = cls.get_blender_addon_package_name()
         return importlib.import_module(name)
 
+    @classmethod
+    def is_addon_enabled(cls) -> bool:
+        return cls.get_blender_addon_package_name() in bpy.context.preferences.addons
+
     @classmethod
     def get_addon_preferences(cls) -> bonsai.bim.ui.BIM_ADDON_preferences:
         blender_package_name = cls.get_blender_addon_package_name()