Can't open files from the side tree view

In terminal navigate to project folder:
cd ~/Workspace/project_336 Run Atom: atom .

The project open in Atom, show files on tree view, if I click on any file, the first three files show in editor, but, from the fourth file onwards, nothing is showing.

Close all instances of Atom, remove the folder ~/.atom and ~/.config/Atom
Reopen Atom, same thing again only the three first files clicked open in editor and no more, and nothing more show in editor.

ATOM 1.39.1
Arch Linux updated

Does this happen in safe mode (try atom --safe)? Do you use any packages that limit the number of tabs shown, e.g. zentabs? Did you double click the files in the tree-view to open them (single-click only let’s you peek at them)?