Weird edge jiggle on Hover

Hello,
Great Portfolio plugin, I’m testing it out before I completely switch to it, and I realized that if I choose ‘Justified’ as Layout, when you hover over it the image zoom is good but at the edges there’s a small back and forth jiggle/shake.
It’s also on the demo site https://visualportfolio.co/justified/
It’s much obvious on bigger thumbnail of course.

This does not happen on any other layout.
Any Idea why or how I can fix it?

Thanks in advance,