data-wall-width=0 at specific window with sizes

[js-ffx]

i have the problem that the wall does not show images/blocks at specific window sizes.
The container has a data-wall-width=0

my setup:

let freewall = require('freewall')
      this.wall = new freewall.Freewall('#editors-choice-images')


      this.wall.reset({
        selector: '.lightbox-delegator:not(.hidden)',
        animate: true,
        gutterY: 5,
        gutterX: 5,
        cellW: 300,
        cellH: 200,
        fixSize: 0,
        onResize: () => {
          that.wall.fitWidth()
          // that.resizeImgs()
        }
      })
      this.wall.fitWidth()

I could fix this problem when i change the following line in the freewall.js lib (line 111 https://github.com/tearsofphoenix/freewall/blob/master/freewall.js):
var col = !width ? 0 : Math[makeRound]((width + gutterX) / cellW);
to
var col = !width ? 0 : 1

at specific window sizes the col value becomes zero. Does anyone know what is the problem here, is something wrong with my config?

[MastaBaba]

For me when the cellW I set in wall.reset is larger than the available space for the cells, the cells disappear.