Output obj file from Manifold is broken

[dqj5182]

I am using Manifold for processing Acronym meshes to be watertight. However, many of the meshes get broken after processing with the watertight script. The sample obj file is in this Google Drive link and file name is mesh file name for Acronym. Could you look over the result and check why such problem occurs?

https://drive.google.com/file/d/1H3AUbm9nDgG3xhewmpuTNYm2xZ6xRFgq/view?usp=sharing