Chained command with argument and option results in "No such command"; according to the documentation,

Other than that [nargs=-1 being allowed only on the last chained command] there are no restrictions on how they [chained commands] work. They can accept options and arguments as normal.

Reproduced on Ubuntu 18.04 with Python 3.5, 3.6 and 3.7, for all tagged Click versions between 3.0 and 7.0 (chain= does not seem to be supported for the ones before that).

Minimal repro (removing the argument allows the option to be recognized):

import click

@click.group(chain=True, no_args_is_help=False)
def cli():
    pass

@cli.command()
@click.argument('argument')
@click.option('--option')
def command(argument, option):
    pass

if __name__ == '__main__':
    cli()

Results in:

$ python3 test.py command a --option x
Usage: test.py [OPTIONS] COMMAND1 [ARGS]... [COMMAND2 [ARGS]...]...
Try "test.py --help" for help.

Error: No such command "--option".
$ python3 test.py command --help 
Usage: test.py command [OPTIONS] ARGUMENT

Options:
  --option TEXT
  --help         Show this message and exit.