Just upgraded from easyUI jQuery 1.6.2 to 1.8.8 and all the sizes of my website layouts have changed.
After investigating, I saw you have included in panel.css this segment:
* {
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
-o-box-sizing: border-box;
-ms-box-sizing: border-box;
box-sizing: border-box;
}
I believe you should limit these rules to panel containers, otherwise it can break websites when upgrading...