I had a slightly screwed up Fedora install due to being a noob with an NVIDIA 1060 and little clue on their drivers. I hooked my laptop up to an old TV (720p if that tells you how old it is lol) and… my entire desktop got absolutely screwed up. Everything was stuck in 4:3 resolution for some reason and my icons got bloated (for lack of a better term). I tried to fix it but IIRC, it just got worse and I had to reinstall.
Element. It’s a popular client for Matrix, which is a federated messaging platform (similar to lemmy and mastodon) with different instances.