Problem showing Image Thumbnails with Version 1.2.4

Hi Arnaud, 

Thank you for letting us know. This is also fixed, please update. 

Hello.

Thanks a lot for your reactivity but I'm sorry to tell you that the bug is still not fixed 🙁

I'm using Firefox 59.0.1 for Mac (see screenshot).

The pictures are here because when I click to zoom, I can see it.

Btw it works perfectly with Safari and Chrome.

We've just tested on our end and didn't find this issue. Screenshot here: 

If you have an active cache plugin, please deactivate it. Then delete all caches and purge CDN, do CTRL+F5 on the frontend. 

Also, please check this demo page in your browser, and let us know how it works.

http://wpdiscuz.com/addons/wpdiscuz-media-uploader/