Return Proper Box UV Texture Creation

[waterdragon78]

Detailed description of your suggestion

When creating a texture from a per-face UV in newer updates (>4.10.4), it is no longer possible (or harder) to create a box UV that doesn't break the whole texture. I'm not sure what changed, but trying to create a texture with a box UV on any version greater completely breaks the model's texture. I found this with a model my friend was trying to convert for use in some sort of minecraft animation software, I think mine-imator. Screenshots will be attached.
How model behaves with newer versions:

How model behaves with older version*:


*Granted, minor fixes are needed, but they're easy to do and not impossible.

Original model I got sent:

[JannisX11]

Did you mean to submit this as a bug report? If so, please adds steps to reproduce, ideally with a model file attached where the issue occurs.

[waterdragon78]

I did not, as it was a functionality previously implemented. According to this screenshot, the generators were merged as an update, which leads me to believe it was intentionally removed. Although, if this is not the case, I could make a bug report. Good chance I could be wrong lol.

[JannisX11]

Yup, the update just means that you can have cubes with per-face UV and box UV selected and generate a template that includes both.
The option to enable Box UV in the options and "force" all cubes to be converted to box UV should still be functional. If there are specific issues, you can report them.