When scrolling the site, the Demo/Source pane doesn’t remain sticky. The two images below show the pane losing its fixed position.

Images:

• https://github.com/user-attachments/assets/c364c5a6-5e4a-485d-baf6-2e278229f16a
• https://github.com/user-attachments/assets/ef2d7fb6-7d78-41a7-968b-5d0d9a592e5f

Environment:

• macOS
• Dia v1.13.2 (73368)
• Chromium Engine 143.0.7499.194

I can open a PR to fix this. Let me know if you’d like me to proceed.