But now mine is working properly again. I thought it was a bug because it happened during an update, so I thought it was just a bug. Instead, it was my Chromium that had a problem, and I had to reinstall everything and delete all the files it retained.
What I'm most disappointed about is that I can't have Chromium on Ubuntu now that this distro finally works well on Power after such a long time. The good thing is that since it's a deb package, it should be fully compatible, but instead I've tried installing it several times, but nothing, it just won't work. What a shame, damn it.