After switching from widgetkit to JCE Mediabox Popups, a small popup stays open, after I close my popup image. This didn't happen with wk popups, but since yootheme still doesn't support webp images, it's not an option.

I've already tried disabling the widgetkit popups plugin but this doesn't seem to be the problem (at least, it didn't change anything....). Any idea, why this mini-popup stays open?

Never mind. seemed to have been an browser issue. Forgetting the site in Firefox corrected the problem....