It's been there for quite a while. At first I thought it was a chromium bug since it's a beta software but I tried literally hundreds of sites with Highslide like js image viewers and I never had any problems. Maybe there is a bug on the forum's js image viewer?
oh btw, the problem is that when you click an image attachment, the browser window goes black (as it should) but after that, it doesn't load the image and you can't exit the black surface.
Thanks
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