[Solved] Parts of 3D model disappear during animation

Bicyclette Asks: Parts of 3D model disappear during animation
I’m trying to properly play an animation done in Blender 2.8 inside my OpenGL application. When the animation is running, it happens that at some particular frames, some parts of the 3D model “disappear”, by “disappear” I mean that they obviously get relocated at some incorrect position and rotation in the 3D scene.

The model is an FBX file.
Has anyone got an idea about what could be the possible reasons for that?
Maybe some wrong settings in Blender?

Thanks in advance!

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