How to show all files in Eclipse navigator/explorer?

Question

I do not see some of my files in the Eclipse Navigator view (or Projet Explorer or PyDev Package Explorer).

I tried to go to "Customize View..." and remove all filters. It didn't show *.pickle files, but it did unhide some other file types (.* resources).

Answer 1

Remember to refresh the view: Right-click the background of the Explorer/Navigator view to open a context menu, then choose "Refresh" (F5).

Restarting Eclipse doesn't help.