Thumbnails trouble

Hi,

I use the 3.3.4 version of your plugin, i think it’s the latest version for 5.2 version of WP.

When i use thumbnails display i have a trouble.
When i click on a thumbnail nothing appens and the slider is block and restart to the first picture.
When i hide thumbnails and activate bullets everything is ok.

Thanks for support and check it. I can send you link of website in private or by email.
Regards.