The table editor is bugged and will mess up the article.
After some discussion with the mods, the only way is to freeze the article to prevent people from breaking it by accident.
I think you tried to make some changes but they have been lost because we needed to revert to a working version. Any changes can be suggest down here in the comments. You can tag a moderator to help with edits or leave them here to be processed in batches.
I hope the issue gets fixed so we can get back to group editing soon. Until then, we have to weather the storm…