feather does not place buttons for favorites, etc. in the timeline in order to display more posts on the screen.
Instead, we have introduced “swipe shortcuts” that appear by swiping left or right on a post.
Swipe shortcut buttons can be customized at Swipe shortcuts
Some actions such as replies, boosts, favorites, and bookmarks can be performed on another account by long pressing the button.
Please use this function when you want to bookmark with another account.