We have to know in observeChanges if we are in a reactive context for reactive publish.

Not clear why this would be necessary. See
Diggsey/meteor-reactive-publish@a1bed70a44cd4c
9680ce817503282cbfaa8a7cb1

Author: mitar

server.coffee

@@ -34,8 +34,7 @@ MeteorCursor::_depend = (changers) ->
   initializing = false
 
 MeteorCursor::observeChanges = (options) ->
-  handle = Tracker.nonreactive =>
-    originalObserveChanges.call @, options
+  handle = originalObserveChanges.call @, options
   if Tracker.active and @_isReactive()
     Tracker.onInvalidate =>
       handle.stop()