I was looking at a post, specifically this one:
I thought that the answer (the first reply) was a good one, so I clicked to "like". What I expected to happen was what I'd seen on other ones that I'd liked and that after a minute or so, the "like" text would change to "unlike". To my surprise, that text didn't change. Instead, the link that the user Ant-Green had posted as a solution to the original posters question had changed to say "unlike" and the link (for me) changed to the "unlike" link. I no longer could see the proper link.
I am using Chrome Version 91.0.4472.106 (Official Build) (64-bit). I am uncertain if this bug exists in other browsers.
Refreshing the page allows things to work as expected (like link is changed to unlike and Ant-Green's link to a solution returns).