Steps to reproduce
- Open Sandbox Vault
- Set to dark theme if not already activated
- Export to PDF
Did you follow the troubleshooting guide? [Y/N]
Yes
Expected result
The Preparing PDF page should match the dark theme as the rest of the UI
Actual result
White screen that flashes in my face 
Environment
SYSTEM INFO:
Obsidian version: v1.7.7
Installer version: v1.5.12
Operating system: Windows 10 Pro 10.0.19045
Login status: not logged in
Language: en
Insider build toggle: off
Live preview: on
Base theme: adapt to system
Community theme: none
Snippets enabled: 0
Restricted mode: on
RECOMMENDATIONS:
none