After updating Emacs from 27.1 to 27.2 (current stable of Fedora 33 default repository), I found myself with the dilemma that once I open an ORG mode file, all subtrees and children thereafter are opened instead of neatly wrapped up and folded.
Is this an expected change for ORG mode? If it is, can one revert to start with a folded tree globally without having to add headers in each and every file one works on?