Blender rendering in wrong window on purpose!

Hello, i have split my interface for example 6 views and made one of them as render view (uv/image editor). But Blender take at intervals other window for rendering like side view and at the end i have two uv/image editor views. Can anyone explain please in which situations blender use other window although the rendering window already has been specified?



I think it uses the largest panel.

In UV/Image Editor select RenderResult from pop-up list of images to display.
But rendering in image editor may take more time than in render window.