grid:simple gallery image spacing - set to 0px - but still get sporadic slim white line between rows/columns..really annoying!

Site URL: https://coconut-grasshopper-b736.squarespace.com/config/pages/632491ecd2457c0d3e60fa0e?p

Hi all

site password : gingerkev

re my 'case studies' page - and specifically ONLY the first three grid:simple galleries:

Android

Afiliiate Worldwide

American Airlines

I've set spacing in each accompanying gallery to 0px - as I want to keep the overall look uniform with testimonials page and case studies home page...

all looks ok -  but when i open each gallery via arrow in top right hand corner to view in 'real world' i see an occasional thin white line between rows/columns...really annoying 😀

I haven't properly published my site yet as it isn't finished - so will this dissappear then? or is there something wrong? All images cropped at 3:2 ratio, 2000 px wide in identical way..

thanks in advance

Kev

No white line to me. Can you take a screenshot?

https://coconut-grasshopper-b736.squarespace.com/case-studies/project-one-f5w4d-hl44a?noredirect