Hi,
That look like a CSS issue.
I would recommend to first check the "Back-end CSS File" setting of the Display tab in the HikaShop configuration.
If it's not set to "default", then it means that you've customized the backend CSS of an old version of HikaShop and thus you're using the CSS of a previous version of HikaShop and when we'll change stuff in the HTML of the backend, the CSS won't match.
Ideally, instead you could add your custom CSS directly in the view file of the area where you need it, or via a plugin (for example
extensions.joomla.org/extension/style-a-.../load-custom-css-js/
) so that you won't have to deal with manually moving your changes each time you update HikaShop.