Since the latest update, the builder's Flexbox settings no longer carry over to the live site. I've been having to put the Flexbox properties into the manual CSS fields to make them work
this only started happening recently, after that update. Before that, the builder worked fine
and all the Flexbox stuff worked fine.
For example, you can see on this old mockup: https://twooceansdigital.com/dev/boxwoodwp/boxwood-home-1/
that in the header bar, the logo is off-center, and the menu toggle is justified to the left inside its box. originally the logo was centered and the toggle was over on the right.
so this bug, I think, operates retroactively — it messed up all the existing headers I'd created