When using QuickLook to quickly look through multiple images (pressing space and then using the arrow keys to navigate), some images will not get displayed by QuickLook when hitting them up a second time (going back for example).
A GIF does a much better job than me showcasing the issue. So here's me previewing a few random images:
I have tried deleting
and restarting, unfortunately to no avail.
Repairing permissions and restarting the Finder in 32-bit mode, as suggested by others, don't appear to have any effect on this issue either.
This happens with all kinds of images, no matter their source or format.