Hey, I set on the “how many products in a line in the catalog” 5 and its doing 4 in one line and 1 and another line. after that it loops with all my thousands products.
If I write there 4 so it will be 3 on the first line and 1 on the next line.
In your screenshot, you have set the number of “Rows per page” to 1000000 (1 million).
I don’t know how may products you have in total but if there are thousands, it could be that the customizer is not refreshing the page fast enough with all those thousands of products loading. This possibly could be why the products per row is appearing to be wrong when changing this.