JIRA v6.4.4
JIRA Agile v6.7.2

Pre condidtion:
parent items can have multiple kinds of subtasks below them e.g. type 1 , type 2 type 3
Parent A
subtask Type1
subtask Type2
subtask Type3

Create a scrum board to only show subtasks of type 2 by adding the filter query
"project = ABC AND Issuetype=type2"

Steps to re produce:
1) log into the scrum board
2) transition the subtask of type 2 to done
result: board asks you to close the parent
Bug: there are other subtasks of type 1 & type 3 still open under the parent the pop up should not be showing up