NERDTree with AG.vim after "e" cursor goes to NERDTree - vim

I have NERDTree opened on the default left side, and some vim file on the right side. After I do search with Ag like :Ag! "echo" I get results in the quickfix window. I chose one of the results and by pressing "e" it opens it to the right side and close the quickfix window, but cursor goes to the left side where the NERDTree is located. Is there a way to jump to opened file right after I click "e" and not pressing "ctrl+w" and "l"?

via Chebli Mohamed