I’ve come across some unexpected behaviour when formatting block quotes in rich text areas.
My blockquote line height doesn’t inherit values from the body tag.
To ‘reset’ the value, I have to manually enter a different value, then put the correct one in, and it works.
So if my line height should be 1.4em. I enter 1.6em (or anything else), then enter 1.4em again, and it works. Otherwise the value isn’t inherited.