Hello,
This new feature works with new css command in the frontend file (4.4.2), in ou futur HikaShop release we will put these news commands in the hikashop.css file, and so this issue will be solve for our next release.
Now in order to solve now your issue, I suggest you to analyze the last 4.4.2 frontend file css with WinMerge to see what's new in order to add it to your current frontend file css.
And especially around line 840 :
Note : See
how to add your command css in your css file, thanks to
this tutorial
.
If you ever think you want to be able to fully use this new feature, I would recommend that you be careful to add all the css lines relating to this feature.
Hope this will help you to solve your issue.
Regards