I always use child themes for all my clients’ sites and never had issues overwriting the parent theme by simply editing the file of the same name in my child theme folder.
But for some reason, overriding the parent theme files is not working on my xstore child theme. If I edit the xstore parent theme header.php file for example, the changes work. But if I do it on the copy of the same file name in the child theme folder, it’s ignoring it.
I am using the automatically generated child theme that came with the theme files.