Slides disappears when slider switch.

[gevzroot]

Hello, Viljamis, I need your help to resolve issue with slider in Firefox. I has an actual versions of FF and ResponsiveSlides and it's not working properly with each other. Slider show only first slide and disappear when switching the slides. This problem occures in FF only, in other browsers all ok. Please help?

Code I use:

function initResponsiveSliders() {
  jQuery('.rslides').responsiveSlides({
    auto: true,
    speed: 500,
    timeout: 5000,
    nav: true,
    pause: true,
    pauseControls: true,
    prevText: '<i class="fas fa-chevron-circle-left fa-3x"></i>',
    nextText: '<i class="fas fa-chevron-circle-right fa-3x"></i></i>',
    navContainer: '#navContainer'
  });

  jQuery('#operativno-slider').responsiveSlides({
    auto: true,
    speed: 500,
    timeout: 20000,
    nav: true,
    pause: true,
    pauseControls: true,
    prevText: '<i class="fas fa-angle-left"></i>',
    nextText: '<i class="fas fa-angle-right"></i>',
    navContainer: '#oper-controls'
  });
}