Isort 5.4.0 with combine-as drops comments on some imports

[ziima]

When applying isort on a following snippet

from smtplib import SMTPConnectError, SMTPNotSupportedError  # important comment

isort tries to drop the comment.

Command:

isort --line-length=120 --check-only --diff --combine-as /tmp/isort_comment.py

Affected version is 5.4.0, comment is untouched by isort 5.3.2. As far as I know, only this particular import is affected, I wasn't able to create another case. But the bug was reproduced on several machines.

[tpazderka]

This can be triggered by

from appsettings import AppSettings, ObjectSetting, StringSetting  # type: ignore

as well.

[timothycrosley]

Thank you for reporting, I'm sorry this regression made its way through! I've added an additional regression test that tests both of these cases to the isort regression test suite and pushed a hot fix release (5.4.1) to address this regression.

Thanks!

~Timothy