After upgrading from 3.10.3 to 3.11.2, feh now does this weird behavior where when I'm scanning through images (e.g., pressing down right/left arrow keys) the image will quickly fill up (e.g., it's tiling the image across and down the whole window/screen) the screen/window at whatever zoom scale I have it set to, and then it will show the image at the correct zoom level centered on the screen/window. This makes it pretty klunky/slow when scanning through images as it has to draw the image several times before showing it, then go to the next one, repeat, etc.
Downgrading to 3.10.3 fixes the issue/restores the old/better behavior where it does not do this.