Frontend how to fix this?

HEy guys,

In frontend I’ve got this:

The slider background is in the wrong styling but I can’t find any documentation on how to fix it.
I thought this would fix it, but it doesn’t:
paper-slider-container-color: 'rgba(0, 0, 0, 0)'


Never seen this. Theme? Have you tried another one?

I made the theme, so you might have not seen it :smiley:
It’s mix of the default theme and custom tweaks.
When using the dark theme for nights it’s not occurring. but when I tried those in the light theme it gives the same result.