As designed Adding XenForo_Application::defer to method stops ability to debug

[Jon W]

Not sure exactly why this happens and I don't think there is anywhere in XenForo core that this is noticeable, but if you add a call to run a deferred task to a page then it cause the debugger to stop running and you can no longer see how many database queries have been run, which queries, etc.

 

[Mike]

The deferred system intentionally disables MySQL query logging as it is fairly memory intensive (or at least looks like a memory leak) and many deferred tasks run large numbers of queries.

It's not the presence of the call in the page -- it's actually that the page runs it. If you need this, you can stop disabling the profiler in your task.

 

[Jon W]

Is there any way that it could just pause the MySql query logging instead so that everything logged up to that point could still be output in the browser?

 

[Mike]

You could probably change the call to disable the profiler if you preferred, though in that case what is output is basically "wrong", so I don't think it's something we'd change.