it's part of the new system. You can like content, but can't dislike or remove your like unless you have a reaction score of 20 or higher (even then, it doesn't work half the time). It was added after leakers requested it, because they didn't like people disliking content. The bugs may eventually be worked out but until, liked content can become hidden again with no fix.
Honestly I wonder about this site sometimes. It seems the management decisions can be really messed up. Hopefully I won't get banned for that comment haha.
Same :/