Problem with resizing borderless windows that are located against the screen border

Apparently the invisible draggable area which you can use to resize a window is located outside the window.

Now that all windows are borderless, when I auto-resize a window to the left part of the screen (by dragging it to the left border of the screen) I can no longer grab the left, top and bottom border for resizing afterwards (the resize arrows do not appear). I suppose that, when the border was 1 pixel wide, there was always the possibility to grab the border in order to resize the window.

Maybe there should be a small (even 1 pixel could make a difference) invisible draggable area inside the window too? I suppose there is no such draggable area inside the window at the moment so as not to interfere with the interior of the window (the scroll bars for example)? Or is there another reason?