I just got a reply to my Bug Report stating that this had very high priority, so I think they’ve identified there’s a real problem here.
Just for background, the tilde ~ is a standard character used by many translations in place of a space. It represents a non-breaking space, which you would use if you want a visual space but you don’t want the word before and after to ever get broken over a line.
I’m hoping for a fix in the 63.8 or some other upcoming version. If that fix doesn’t include reverting all the changes made (and since you don’t use ~ anywhere), it should be fairly simple to do a find-and-replace to convert all the ~ back into spaces.