It seems this issue has resurfaced. With "use font vertex buffers" on, one of the buttons in my lua sidebar, in which I use an emoji character, does not render properly the first time:
https://i.imgur.com/DuK4O73.png (under the star and above the landmark button). If I click it, then it renders properly. Sometimes the text on the chat console has small errors too. With "use font vertex buffers" off, it doesn't happen:
https://i.imgur.com/0fG1ttx.png . It's a really unimportant thing, I just thought I'd let you know. Thanks!