app de pesquisa angrysearch: a janela de resultados nunca é atualizada no modo de pesquisa lenta (substring)

Question

Eu corro angrysearch em duas máquinas virtuais (xubuntu e bodhi_linux, ambas de 32 bits). Além disso, eu uso o programa iniciando o comando ./angrysearch.py do respectivo pasta. Na página link , ele diz:

angrysearch.py file alone is all that is needed for full functionality. But no special icons or dark theme.

Então eu não precisei "instalar" da maneira usual. E funciona bem, exceto substring e modo regex .

Eu tenho o mesmo problema que o usuário jhooly ( link ):

In slow mode, regardless of what i put in the search bar, no results. the results list doesn't change from the pre-search list of folders [...] Don't even get the results that i do get in fast search.

fwiw Regex mode doesn't seem to work either. the bar goes orange but again no updates in the search results box.

Alguém sabe por que isso acontece?

P.S .: informações adicionais do terminal ao executar o modo substring:

Traceback (most recent call last):
  File "./angrysearch.py", line 91, in run
    self.words_quoted)
TypeError: ThreadDBQuery.db_query_signal[str, list, list].emit(): argument 3 has unexpected type 'NoneType'
Traceback (most recent call last):
  File "./angrysearch.py", line 91, in run
    self.words_quoted)
TypeError: ThreadDBQuery.db_query_signal[str, list, list].emit(): argument 3 has unexpected type 'NoneType'
Traceback (most recent call last):
  File "./angrysearch.py", line 91, in run
    self.words_quoted)
TypeError: ThreadDBQuery.db_query_signal[str, list, list].emit(): argument 3 has unexpected type 'NoneType'
Traceback (most recent call last):
  File "./angrysearch.py", line 91, in run
    self.words_quoted)
TypeError: ThreadDBQuery.db_query_signal[str, list, list].emit(): argument 3 has unexpected type 'NoneType'
Traceback (most recent call last):
  File "./angrysearch.py", line 91, in run
    self.words_quoted)
TypeError: ThreadDBQuery.db_query_signal[str, list, list].emit(): argument 3 has unexpected type 'NoneType'
Traceback (most recent call last):
  File "./angrysearch.py", line 91, in run
    self.words_quoted)
TypeError: ThreadDBQuery.db_query_signal[str, list, list].emit(): argument 3 has unexpected type 'NoneType'