About the problem of confusion after exporting the FBX model

Blender 2.93 / windows 10
I don’t know why this happens
I tried it with software or the betterFbx plugin export
do i need to check something?

The original model

Hi @jackpot. This is not a support forum for using Blender, but a place for developers to talk amongst each other. If you’re interested in developing/fixing the FBX exporter, you’re certainly in the right place! Do make that explicit though. For now, I’ll assume that this is not the case, and that you want help using Blender. For that, please see the links in the blue bar at the top of each page.

I’ll close this thread, as it seems to be off-topic for this forum. If you want to discuss this, send me a private message.