fixed scene watchers

apps/scene_detect.py

@@ -1,5 +1,5 @@
 from appdaemon.plugins.hass.hassapi import Hass
-
+import asyncio
 
 class SceneDetector(Hass):
     def initialize(self):
@@ -21,5 +21,6 @@ class SceneDetector(Hass):
 class MotionCanceller(SceneDetector):
     async def scene_detected(self):
         await super().scene_detected()
+        await asyncio.sleep(0.5) # needed for when the scene gets turned on from everything being off because of competing callbacks
         app = await self.get_app(self.args['app'])
-        await app.cancel_motion_callback(new='off')
+        await app.cancel_motion_callback(new='off')