I use LyX exclusively for note taking, rather than as document generation tool. I would have used emacs org-mode if it weren't for the fact that LyX allows me to enter math formulas and simple drawings in WYSIWYG mode.
I used to be able to insert cross references to a label in another file, and be able to click and have LyX jump to that label (as long as the second file is already open). Now after several LyX version updates, I can't seem to be able to do that. The label says "BROKEN: Ref: blah blah" and clicking on it just opens a dialog to edit the cross reference.
How do I make LyX behave the way it used to? I can't seem to find any good alternative to LyX for note taking with math formulas, drawings, and local storage (not web or cloud based).