Blender export issues

[SkyBuilder1717]

If model will be exported in Blender 4.3, (with new .b3d exporter)

It will looks like that:

And that is cursed as fuck, unavailable to work normally and useless!

If model will be exported in Blender 2.72, (where .blend file was originally maded, with old .b3d exporter)

It will be totally fine:

Needs to be updated and fixed for new exporter, somehow.

[SmallJoker]

The model files haven't changed in 6 years. Please reopen this issue in Blender instead so that they can fix the import/export script.

[SkyBuilder1717]

https://projects.blender.org/blender/blender/issues/133919

[SmallJoker]

Does https://github.com/GreenXenith/io_scene_b3d/ work better?

[SkyBuilder1717]

Does https://github.com/GreenXenith/io_scene_b3d/ work better?

Nothing was changed

[SmallJoker]

Nothing was changed

That's unfortunate. You could try to open an issue in that repository and/or debug the issue on your own. I don't know who's at fault here.
Interestingly, the bone positions are only distorted along the Y+ axis but not horizontally. You could print the bone matrices while exporting from the old and new Blender version to compare the values.

Perhaps it's again some API compatibility issue like here:

https://github.com/GreenXenith/io_scene_b3d/blob/0e08bccfa168abd315fa1274385b18f1ae07f663/export_b3d.py#L567-L582