So, as the other two posts went unanswered with no clear fix so far, I will bring it up again to see if anyone here is alive and kicking.
Firstly, this bug is now no longer just with 2.5, as I went back to 2.4 with the same issue. Someone a few years ago botched the language pack it seems, as NONE of the language settings or fonts are showing up. I get the blocks and buttons, with no font/words. Just like in the previous two posts of the same issue.
Now, I know when I last played 2.4 that this was not a bug that was happening at the time. I have restarted the game, I have reloaded both versions, I have used command prompts in the game to force load english. None of these things have worked.
I would like to know why there isn't follow ups on the previous post after asking for the system info and files.