Just logging this even though I’ve worked around it in CSS. I’ve found that content line heights were very small after the update. If I leave Text Settings -> Line Height set to Default, it’s just a little too large for my liking so I have it set to 1.5em.
From my notes a while ago it looks like Line Height config setting seems to be completely ignored, but for line heights less than 2.0em for some weird reason. 2.0em and above and it’s honoured.
I’ve kludged it in CSS for now:
/* Increase body text line height – Mantra line height seems to be ignored unless 2em or greater for some reason */