How to disable zoom-out in Safari in split-screen on El Capitan?

In split view on El Capitan Safari zooms-out some websites, making them unreadable (and making split view unusable). Is there any hidden setting to disable this? I tried to use setting in 'Advanced' preferences that is called 'Never use fonts smaller than X' - it does not seem to make any difference. Also there is nothing in TinkerTool about that. As an example, this is how Chrome and Safari behave in the same situations: - When Safari side takes minimum space, Safari completely "zooms-out" website and shows "overview" (?) of the web-page: - When Chrome side takes minimum space, it still shows normal font sizes without any special treatment. (Notice how this web page looks normally in Safari): This effect looks cute, but is not very useful in my opinion. Can this behaviour be disabled, so Safari behaves like it does when window is just resized?