Xcode - can't find Debug View Hierarchy button

Question

I can't find the Debug View Hierarchy button in Xcode.

I've read this:

Xcode 6.1 can't find 'debug view hierarchy' button

and launched my app on the iOS8 simulator but still no luck. Something to do with the Architectures perhaps?

Here's what I'm using:

Answer 1

Check to see if accidentally you have disables User Interface debugging. You can find this option in Edit scheme, check out the screenshot:

Then this button will be back:

Hope it helps someone.