Any way to see posts only from groups I've joined?

If possible, I'd like to see posts only from the groups I've joined.

I would have thought that the Following tab would do that, but apparently that's just individual posts I'm subscribed to? On that tab, I just see posts I've written, and they're oddly duplicated (screenshot).

• Update: Besides the duplication issue, I'm not sure the Following tab is working as intended. I just followed a post. At first, that post didn't show up in my Following tab, even after a couple of refreshes. Then, it showed up, along with a bunch of other posts by the same author that I hadn't followed (like this one). But apparently following the one post somehow auto-subscribed me to some other posts by the same author. Seems like there are some bugs here.

If this feature doesn't exist, I'd love to see it added. It could be a "My groups" tab on the forum page.