Page edit problem

Hi,
I am having a problem with the visual page editor, which seems to be caused by the plugin. When i click on a field to edit it, the field collapses and if i click again, it will add another section. I deactivated all of the plugins to try to identify what was happening. This made the editor available again, so i activated the plugins one-by-one. When i activate the gallery, the problem comes back again.
I really like the plugin and the galleries are great, but for now I guess, the work around is to deactivate, carry out the edit, then activate.

https://www.ads-software.com/plugins/gallery-by-supsystic/