Drag of images causes to disconnect from the loaded zim file

[FractalU]

In the kiwix browser extension 3.9.0 of both firefox and chrome, whenever I drag an image by mouse the loaded zim file gets disconnected and I get sent back to the configuration page. This also happens with the progressive web app. I tested the progressive web app on https://pwa.kiwix.org/www/index.html. What I expect is that the dragging of images does nothing as it's the default behavior of any web page. The kiwix browser extension and the progressive web app are both based on kiwix-js. I guess there is a bug in kiwix-js. That's why I'm writing here.