Be more explicit with query string to turn on track changes

services/web/public/coffee/ide/editor/directives/aceEditor.coffee

@@ -71,7 +71,7 @@ define [
 				highlightsManager     = new HighlightsManager(scope, editor, element)
 				cursorPositionManager = new CursorPositionManager(scope, editor, element, localStorage)
 				trackChangesManager   = new TrackChangesManager(scope, editor, element)
-				if window.location.search.match /tcon/ # track changes on
+				if window.location.search.match /tcon=true/ # track changes on
 					trackChangesManager.enabled = true
 
 				# Prevert Ctrl|Cmd-S from triggering save dialog