AWS: CLI text output vs pagination

 I have this weird behavior when running a bash script using AWS CLI: all is fine during my testing on a simple organization, but then it fails when I have too many Organizational Units.

Here is the line I used:

aws organizations list-organizational-units-for-parent \

--parent-id "$RootId" \

--query "OrganizationalUnits[?Name='$OuName'].Id | [0]" \

--output text

I'm looking for the ID of a certain OU. So I'm listing the OUs under roor, and filter by name. Then I retrieve the ID, and keep only the first element returned. This worked fine on a simple organization. However, when I have too many OUs and the command starts paginating, I have this weird result:

None

ou-1x23-abcd1234

As if the text output is applied for each page. So I had to update the line to use tr instead:

aws organizations list-organizational-units-for-parent \

--parent-id "$RootId" \

--query "OrganizationalUnits[?Name='$OuName'].Id | [0]" \

| tr -d '[:space:]"'

So, bug or feature?