qwebengine-convert-dict fails on .dic wordlist

Hello, i was trying to convert this attached file in .dic format to .bdic format using qwebengine-convert-dict.

I've got this error

Serializing...
Verifying...
Word does not match!
  Index:    3459
  Expected: এলাকার্রনিত্যনৈমিত্তিক্রঘটনা
  Actual:   এলাকার্রনিত্যনৈমিত্তি
ERROR converting, the dictionary does not check out OK.

I think it's one word causing this issue. It works perfectly if i try to convert only a cut down part of this dictionary.

Looking at https://code.qt.io/cgit/qt/qtwebengine.git/tree/src/core/tools/qwebengine_convert_dict/main.cpp , I think that the problem is caused by 

third_party/hunspell/google/bdict_writer.h