issues with the new 8.8

Hi,

the new version has a lot of issues. must we take childtheme as it is with its objects without to edit it? because when I tried to remove the objects of the home page, to put my own objects , nothing works correctly for example tabs when i click on the second tab, the ads are visible at half (with the listing carousel the same issue) , and after a while when I remove an object from the administration page all objects are removed. and I have a blank page, and I have to start work from the beginning.

im using the childtheme Real Estate S3.I can not continue without setup correctly the Homepage.