View 1200dpi image data, show black page and app crash

[ElephantQing]

Describe the bug View 1200dpi image data, show black page in preview form and then app crash

To Reproduce

1. Add scanner device in naps2
2. Set resolution 1200dpi and Paper Sise A4.
3. Scan a 1200dpi A4 Page.
4. View this image in preview form. 5.Show black page in preview form and then app crash.

Expected behavior Scanned data will be show in preview form.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu 20.04.6 amd64
• Version 7.5.2

Additional context

[GitHubRub]

I'm experiencing the black image preview when scanning at 1200DPI, though the app does not crash for me (Kubuntu 24.04). The problem only occurs intermittently. When it occurs, older scans turn black as well. Additionally, saving the document works properly (it's only the preview that's black, not the underlying data).

[thob]

same issue here w/ 1200dpi scans, I'm on Pop!_OS 22.04 LTS