I loaded Nautilus in Xubuntu 17.10 because I like to see the sync emblems with Dropbox. I changed the file manager in Preferred Applications to Nautilus.
When in Nautilus, when I search and find a file, say a text file, and either double click or hit enter, instead of opening the text file in a text editor, it opens another Nautilus window.
This doesn't happen in Thunar.
Switching back to Thunar has the expected behavior of opening a file when I hit enter.
Any ideas on how to make Nautilus open files on enter?