Chain tasks cannot get parent update_state on 4.3.0

[hu6360567]

Checklist

• I have read the relevant section in the
  contribution guide
  on reporting bugs.
• I have checked the issues list
  for similar or identical bug reports.
• I have checked the pull requests list
  for existing proposed fixes.
• I have checked the commit log
  to find out if the bug was already fixed in the master branch.
• I have included all related issues and possible duplicate issues
  in this issue (If there are none, check this box anyway).

Environment & Settings

Celery version: 4.3.0

celery report Output:

software -> celery:4.3.0 (rhubarb) kombu:4.5.0 py:3.7.3
            billiard:3.6.0.0 redis:3.2.1
platform -> system:Linux arch:64bit
            kernel version:4.15.0-45-generic imp:CPython
loader   -> celery.loaders.app.AppLoader
settings -> transport:redis results:redis://localhost/

broker_url: 'redis://localhost:6379//'
result_backend: 'redis://localhost/'

Steps to Reproduce

Minimally Reproducible Test Case

from celery import Celery

app = Celery('tq-test', broker='redis://localhost', backend='redis://localhost')


@app.task(bind=True)
def ttt(self, test_str):
    self.update_state(meta={'message': test_str})

def on_raw_message(body):
    try:
        msg = body['result']['message']
    except:
        msg = body
    print(msg)


if __name__ == '__main__':
    chain = app.signature('ttt', args=tuple("a"))
    chain |= app.signature('ttt', args=tuple("b"), immutable=True)
    print(chain.apply_async().get(on_message=on_raw_message))

Expected Behavior

In Celery 4.2.2, update_state in both tasks are shown, as below.

a
b

Actual Behavior

In Celery 4.3.0, only update_state in the task of the end of the chain is shown, as below.

b

[hu6360567]

FYI, the celery version of the worker does not affect the behavior.

[auvipy]

sorry?

[hu6360567]

I run the worker with the celery 4.3.0 and the main function with 4.2.2. I can get the expected behavior.
But if the main function with 4.3.0, it can only get the update state from the end task of the chain.

[auvipy]

what is the proposed resolution of you?

[hu6360567]

what is the proposed resolution of you?

Sorry, I haven't used the new version from then...

[auvipy]

i am closing this for now. lots of changes were made in canvas in the mean time. will revisit after celery 5.2 release.