Scroll bar bug when clicking test mail button


I am not pretty sure if this issue is caused by ghost or my Chrome browser or my mac, but since only this page happens to trigger this issue, I just post it here.

OS: macOS Mojave 10.14 beta
Chrome: 69.0.3472.3 Dev
Ghost: Lastest production today


@andy1247008998 I’m unable to produce with latest stable version of macOS and Chrome. We don’t open bugs for beta browsers or OS’.