I'm having trouble with the vertical spacing of an orchestral score. One StaffGroup for some odd reason doesn't respond to any of the StaffGrouper overrides. (no other overrides used at the Staff level).
It uses a hidden second stave. Problem is if I reduce the spacing between the two grouped staves when only the 1st staff is visible it messes the spacing... No matter what I do Lilypond wants to space the grouped staves very far apart which results in strange spacing in some busier pages. I've spent hours trying to figure out how to solve this problem.
The file is big and has a lot of dependencies so I cannot even make a tiny example or even share the file itself since I'd have to force you to include the exact same fonts and all kinds of random included files.
See the attached image.
I know this post may be useless but if you have a lot of experience with Lilypond please contact me so I can share the file with you in private, even if it won't compile.
vertspacing.jpg