E131: inconsistent reporting when comment present on initial line

This (correctly, IMO) produces no warnings:

import foo

dct = {
    'key':
        foo.yadayada() if foo.some_condition()  # raises no warnings
        else foo.blablebli()
}

On the other hand, simply adding a comment on the 'key' line makes it raise E131 on the two most indented lines:

import foo

dct = {
    'key':  # some comment added
        foo.yadayada() if foo.some_condition()  # now, this raises E131
        else foo.blablebli()
}

Using pycodestyle 2.8.0.

No source file or test is named. Start by reproducing both Python snippets with pycodestyle 2.8.0 and trace the E131 reporting path; done means equivalent formatting reports consistently, with regression coverage for the comment and no-comment cases.