For .idea there is dedicated registry setting for it as well (it is enabled by default for me, in PhpStorm at very least)
Help | Find Action...and look forregistry(or viaMaintenanceCtrl+Alt+Shift+/on Windows using Default keymap)- Once inside — look for
projectView.hide.dot.ideaentry - Adjust accordingly (before leaving window — ensure that new value is accepted properly — e.g. focus another entry)
Took from
Update since Jun 16, 2020:
You need to restart your IDE after applying changes in Registry. Thanks to @DavidPauli!