I am working on a ready pattern (https://market.websitex5.com/pl/wzorce/livepreview/35404d08-7dec-4498-92d9-2a55e6c7995/TJLPR_0721). After a few modifications, working with row formats becomes impossible - rows combine into random configurations and are locked. Impossible to change order of items (responsive option). The program crashes, I can't preview or even save my project. Each operation takes longer than usually: f. ex. creating anchors takes five minutes. It takes 20-30 seconds to edit any item. I have restarted the program many times today, starting work from zero point. Reinstalled the program - no changes. It is very bothersome. Please help.

This problem only applies to the Website Marketplace project - I can work on other projects correctly.