[BUG] Thumbnail shown instead of full image when returning to long image

[cmixed]

Describe the bug
When viewing a vertically long image (e.g., a screenshot or web page capture with a large height-to-width ratio), switching to the next image and then navigating back causes the viewer to incorrectly render the thumbnail version instead of the full-resolution image.

To Reproduce
Steps to reproduce the behavior:

1. Open a long image
2. Wheel down (next image)
3. Wheel up (change to the long page)

Expected behavior
When switching back to the previously viewed long image, the viewer should restore and display the image correctly.

Screenshots
If applicable, add screenshots to help explain your problem.

ss-20260821-173859.mp4

Environment Information (CRITICAL)

• QuickView Version: v6.37.0.0
• OS Version: Windows 11 25H2 26200.9168
• CPU: AMD Ryzen 9 7945hx
• GPU: NVIDIA RTX 4060
• RAM: 64GB
• Display: 2560 x 1600 150% Scale

Image Information

• Format: AVIF and PNG (I tested this two format with same image)
• Resolution: 1469×12627
• File Size: 3.83MB (avif version), 7.98MB(png version)

Additional context
No, only my thanks.