Gallery Masonry Bug?

Site URL: https://www.timourkhan.com/portfolio

Hello, I am encountering an issue on my site where going to another page from the main portfolio page and hitting the back button on the browser causes the masonry view on the main page to bug out. After testing this on multiple browsers it seems to only happen on Chrome for web and Chrome & Safari for mobile. I removed all code to see if something was causing the issue but that didn't fix anything. 

Does anyone know what might be causing this and how I might go about fixing it?

I started experiencing this issue two months ago. I went through hoops with the support team. Squarespace admitted it was a bug on their end. I highly recommend submitting a support ticket and reaching out for them to investigate. They may only fix it if it's brought to their attention a number of times so the more the merrier .