Try across the iPad starting from the outside of the device screen.
Discussion
Also, since I have your attention, really appreciate if we don't alter the feed when we go back to the feed screen from post screen using "cmd+[" on mac.
What's happening is that I focus a post, read it, interact with it but when I go back there is a glitch in the feed; the posts move around the places and it won't go to where I had left off. It's a major hindrance to browsing for long times.
Once the feed is loaded, it shouldn't refresh and update the posts until the end of feed is reached or a special button is clicked directing it to refresh the feed.
The posts currently move all around the places and it's not a nice experience.
Could you post an issue maybe with pictures / a screen capture video?
Thank you.