As reported within another bug report starting March 23, https://www.chowhound.com/post/expand... and intermittently thereafter, Heart/Like is not alway clickable. The position when the activation/hand pointer is visible seems to be very narrow, often well to the right edge of the heart or below the lowest point of the heart, not in the middle or on the left edge.
I notice this most often when I go into a discussion (e.g., Weekly Menu Plans) where I've previously read most comment, by clicking the link for the newest comment from the Home Cooking main page or my discussions page. I scroll up from that newest comment, often clicking heart to acknowledge other comments. I get up to the first or 2nd comment I've not yet read, and heart no longer is clickable. Sometimes I can mouse around to find a narrow "sweet spot", most often I just give up.