Hi Stefan,
I didn't see this on my iPhone but can see the issue in Firefox on my PC. You might want to try this until Cirian gets back to you.
If you add this to your custom CSS either in the template or the custom.css folder in thhe CSS folder via FTP
#j51imagehover239-controls{width: 27%;white-space: nowrap;}
#j51imagehover-prev239{display: inline-block;width: 12px;}
#j51imagehover-next239{display: inline-block;width: 12px;margin-left: 21px;}

That should fix it. I don't know about the other browsers but that works in Firefox and I suspect it will work everywhere.
I hope that helps,
Mike

Hello

To amend try adding the following to the Custom CSS field of your templates parameters (Extensions -> Templates -> [YourTemplateStyle] -> Custom CSS)....

.j51imagehover-prev svg, 

.j51imagehover-next svg {

    max-width: 20px;

    display: flex;

}

.j51imagehover-nav {

    width: 60px;

    display: flex;

    justify-content: space-between;

    margin: 10px auto;

}

Ciaran

Hello,

@ Mike: Thank you for the workaround. It worked fine.

@ Ciaran, thank you your CSS Code works as expected.
Regards Stefan