100% zoom error

[bugmenot]

Viewing folder with 200 raw files, set 100% zoom fullscreen lock zoom.
After viewing about 30 files, the next file loads '100%' but size about600x800.
Enlarging it shows pixelated. Going forward all files are small. Back files are fine.
Restart xnview and all fine again.

[xnview]

And if you try to load directly this picture, perhaps it's the embedded jpeg