Hi Razor,
I'm currently using the files you linked during your testing on Discord and am not getting the described errors.
The reported character (Tyrael) has correct stats and a portrait with the pak file as well as with the raw files.
I also looked through the raw stats vs the pakked stats and they are identical. As far as I can see, there is nothing wrong.
I'm contacting you on Discord so we can look at this further

I'll post the slution here as well.
Sincerely,
Kevin