God I hate this! Never fails, either. I’d be on a page of someone’s profile or some piece of content I’d like to see but I’m required to log in. Okay, I will do so. So I do and it doesn’t redirect me back! It just puts me in the front page, like no thanks, just bring me to where I was!
Yep, infuriating. It just happened with me. Googled something, followed a link to a website. I couldn’t see images on forum lthread there without registering. So I register, that of course takes me to the home page on the forum instead.