PageBuilder Update clutters content below each other – no floating

Hey,

the recent PageBuilder-Plugin destroyed the looks of our website. The single grid cells are not floated next to each other, but only bear the width of say 33.33%.

#pgc-6-1-0, #pgc-6-1-1, #pgc-6-1-2, #pgc-6-3-0, #pgc-6-3-1, #pgc-6-3-2 {
    width: 33.3333%;
    width: calc(33.3333% - ( 0.66666666666667 * 50px ) )
}

Or see on the live site: https://www.modulbuero.de/das-modulbuero/

Do you have any idea? Any settings that might need changing?

Thanks,

Christian