I'm using Debut theme and the catalog is set to show 5 products per row but it only shows 4 on the last row, (Make the page look odd) Has anyone seen this before? Here is the link to what I'm describing https://hammerandstainvb.com/collections/project-gallery
It looks like that's just the last product that's available in that collection. Unless the total number of products is divisible by 5 (i.e. 25 total products = 5 rows of 5; 40 products = 8 rows of 5, etc.) then the last row will always be short of the 5.
For example, if you have 44 products, then you will have 8 rows of 5, then 1 row of 4.