Not sure Brave or Bluesky can fix this, but here is the problem:
- In Brave mobile, go to bsky.app
- In any post with an image, click the image to open it
- Of course, you can hit the x button to close the image, but the most natural way is to hit the back button on your phone (or slide left from the right edge)
Unfortunately, this closes the browser tab instead of just closing the image and you end up having to open a new tab, go to bsky.app again and scroll a couple of kilometers down to where you were