It has been removed since Opera 15 (i.e. since Opera ditched the Presto rendering engine and switched to Blink, Chrome's rendering engine).

Ooops, just realized this is the wrong forum too!

What's this weird non-active button in the latest Opera dev? http://nathan.uk.to/upload/u/09ea4c5b3fd5c3e7c92ce50a7fce9115.png

Is this going to be a feature or is it just a bug.

[Mod Edit: Moved to correct part of the forum]

So, you're expecting things to work properly on an OS that has been dead for a few months now?