Mac - Double click top bar to expand window no longer works.
Double clicking the top bar used to expand the AI window to fit screen. No longer works on Mac AI 2019
Joel shared this idea
Matthew Prina commented
It looks like this bug first showed up in 2018 but I'm experiencing it for the first time now. I can't do anything in my mac settings or Illustrator settings to get it to work. It works for other applications including Adobe XD but not for Illustrator and photoshop. Hope it gets resolved in the next update.