Lightbox not working
There is currently a problem with the lightbox in our forum. The picture opens in the light box at the beginning, but then the picture opens completely in the browser and you first have to press the browser's back button to get back to the thread
wpForo forum plugin doesn't have lightbox or whatever popup for images.
So this comes from some lightbox plugin or your theme?
oh ok - but which lightbox u using in this forum?
As far as I see, you have wpForo Advanced Attachments addon. This addon comes with its own lightbox. So it conflicts with the one you're currently using. I recommend disable all lightbox plugins you use and leave the addon lightbox.