Jinja2 whitespace controls doesn't work as expected with IF block - jinja2

Question

First of all: I read thoroughly documentation about whitespace control in Jinja documentation!
Have simple Jinja template:
New client has been created.
{% if not client.address %}!! Client does not have address{% endif %}
{% if not client.first_name or not client.last_name %}!! Client does not have first/last names{% endif %}
`C{{ client.id }} {{ client.full_name or "##MISSING##" }}
{{ client.status }}
When client hasn't address and first name it is rendering correct:
New client has been created.
!! Client does not have address
!! Client does not have first/last names
`C123 Some Name
pending
But when client has address or name:
New client has been created.
`C123 Some Name
pending
if expectedly produces empty lines.
Reason why I cannot user {%- if -%}: in this case second example rendering correctly BUT first example joins together both lines with "ifs".
Question: how to keep lines separate in the case then if conditions are true AND remove newlines when it falsy?
UPD: This is how I instantiate my Jinja environment:
from jinja2 import Environment, PackageLoader, select_autoescape
loader = PackageLoader("tally2bot", "templates")
env = Environment(
loader=loader,
autoescape=select_autoescape(["html", "xml", "jinja2"])
)

Answer 1

try this snippet below:
New client has been created.
{%- if not client.address %}
!! Client does not have address
{%- endif %}
{%- if not client.first_name or not client.last_name %}
!! Client does not have first/last names
{%- endif %}
`C{{ client.id }} {{ client.full_name or "##MISSING##" }}
{{ client.status }}
__ init__.py
from jinja2 import Environment, PackageLoader, select_autoescape
env = Environment(
loader=PackageLoader("app", "templates"),
autoescape=select_autoescape(["html", "xml", "jinja2"])
)
template = env.get_template('index.html')
print(template.render({'client': None}))
print('--------------------------------------------------------------------------------')
client = {
'id': 123,
'first_name': 'John',
'last_name': 'DOE',
'full_name': 'John DOE',
'address': 'CA',
'status': 'pending'
}
print(template.render({'client': client}))
result:
(venv) PS D:\dev\python\app> py .\__init__.py
New client has been created.
!! Client does not have address
!! Client does not have first/last names
`C ##MISSING##
pending
--------------------------------------------------------------------------------
New client has been created.
`C123 John DOE
pending