Subject of the issue

Items are in the wrong order when initialized using breakpoints

Your environment

• version of gridstack.js - 12.2.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0

Steps to reproduce

Video
https://jsfiddle.net/jxrsqba4/1/
Open js fiddle and scale output tile down, reload after that

Expected behavior

Items should initialize in the same order that they appear in when scaled down again (0 at the top).

Previously mentioned in #3071