MacOS – Open new folder window in Finder El Capitan – instead of same window

I have different Finder window sizes for almost each folder and just updated to El Capitan.

Now sometimes it opens in the same folder and sometimes it even uses the last open folder like when I chose "Applications" from the menu.
I can use cmd-double click and this usually helps. But sometimes I forget and thus half of the day I spend resizing my windows to the old size.
Is there a Terminal code I can use to always use a new window when opening a folder?

even a call with apple did not bring a new idea. So I will close this question. Thanks everybody!