I should probably change that name to be more clear but when enabled it will mark the post as read when the image is viewed (tapped into).
Ah that makes sense! I was hoping there was a mode where you could swipe through images directly, without going in and out of posts. There used to be a reddit feature where you could do that, and I thought it had been carried over.
There's an experimental feature for horizontal swiping on posts to go to the next one which might be close to what you're looking for, although I haven't hooked up pagination yet so it will swipe to the end of the posts in whatever list you're on then back out.
A community for the mobile app Connect for Lemmy.