Nothing is overtly broken, but the source editor can be a bit wonky. Looks like the selection point is a bit off kilter.

You can choose the old Source editor in your prefs, if you wish.

I think so? Except, perhaps, for navboxes. They look really awful.

Looks to me like their custom navigation boxes at the bottom of each page need a little bit of extra work since the migration. It seems that theme customizations were removed. The resultant theme looks very bland and does not mesh with what should be a sci-fi atmosphere. @ShiroxCloud this isn't anything on you and your team, but the changeover makes for a lot of other work needed to set right what is out of whack. Good luck.

I can help you restyle them, but I'm not sure what they looked like before the migration, so I'll need some input from those who know :)