What is the definition of "Current Number of Tasks"

[Mohammed Mahmudul Anam Manna]

This question is related to the problem we are facing here

https://community.atlassian.com/t5/Jira-questions/Count-Mismatch-on-Filter-Results-Current-Number-of-Tasks-vs-quot/qaq-p/1372589#U1390249

I am trying to understand the following:

1) When using Issue navigation and doing advanced search - what is the definition of "Current number of Tasks" column in the result?

2) How does this relate to "Is Parent Of"/"Is required for" relationship? 


We have been having a lot of misleading reports because of this. Apparently, the "Current Number of Tasks" and "Is Parent Of" link aren't producing consistent results. Is it because the dependent tasks are considered to be "One" unit of task ? Or, is it something else?