User account dialogue text not visible in night mode

SAB 9.0.1
User account dialog text not visible in night mode.
My Account, Sign In & Sign up dialogues only have Title and button text visible in night mode.
e.g. “You can save your highlights, notes and bookmarks …” text is not visible.

User Interface Styles in SAB doesn’t seem to have styles for this.

I have submitted a bug for this.