Bug in NParallelTextCorpus

[Enkidu93]

This change is 

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.42%. Comparing base (0179f69) to head (6234a00).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #290   +/-   ##
=======================================
  Coverage   70.41%   70.42%           
=======================================
  Files         386      386           
  Lines       32204    32204           
  Branches     4531     4531           
=======================================
+ Hits        22677    22680    +3     
+ Misses       8480     8478    -2     
+ Partials     1047     1046    -1     

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[ddaspit]

Is there a unit test that covers the bug we are fixing here?

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johnml1135)

[Enkidu93]

Done. Sorry for the delay - it took me way longer than it should have to find a minimal test to cause this to happen. I confirmed that this test fails when run with the previous code.

Reviewable status: 1 of 2 files reviewed, all discussions resolved (waiting on @johnml1135)

[ddaspit]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johnml1135)