Hello, i saw a few reports of bugs related to folding and unfolding of headlines recently, but I think this is not a duplicate.
I just noticed that with the latest release (Org mode version 9.4 (9.4-27-g47bf60-elpa @ /Users/daniele/.emacs.d/elpa/org-20201026/) unfolding of headlines is broken by whitespace. In particular with a buffer with this content: * Foo ** Bar bar bar bar+49 1520 7178926 * Baz where the line before "* Baz" contains a single whitespace character, the headline "* Foo" can be folded but cannot be unfolded. Removing the whitespace while the headline is folded fixes the problem. Cheers, Dan
