`$subdocument,document` modifier doesn't work correctly if `iframe` exists

[piquark6046]

Prerequisites

Please answer the following questions for yourself before submitting an issue. YOU MAY DELETE THE PREREQUISITES SECTION.

• [X] I am running the latest version
• [X] I checked the documentation and found no answer
• [X] I checked to make sure that this issue has not already been filed

Issue Details

• AdGuard version:
  • 4.0.171
• Browser and version:
  • Mozilla Firefox Dev 101.0b9
• Operating system and version:
  • Ubuntu 22.04
• Filters you use in AdGuard:
  • AdGuard TPF, AdGuard URL Tracking, AdGuard Social, AdGuard Annoyances and List-KR
• Stealth Mode settings:
  • Disabled
• Other browser extensions:
  • None

Expected Behavior

Blocks correctly the subdocument request without a redirection of AdGuard like uBO.

Actual Behavior

Blocks all HTML document request containing the targeted subdocument.

Screenshots

uBlock Origin 1.42.4

AdGuard Browser Extension

Additional Information

https://news.sbs.co.kr/news/endPage.do?news_id=N1006768033

||img.sbs.co.kr/news/ad/delay_redirect.html$subdocument,document
! ||img.sbs.co.kr/news/ad/delay_redirect.html$document
! ||img.sbs.co.kr/news/ad/delay_redirect.html$subdocument

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[piquark6046]

Ping.

[piquark6046]

Ping.

[Alex-302]

https://github.com/AdguardTeam/AdguardBrowserExtension/issues/2322

[maximtop]

Can't reproduce with v4.2.159, seems to be resolved

[piquark6046]

Cannot reproduce with v4.2.159. But, I can reproduce with v4.1.57.

[maximtop]

v4.2.159-beta is already out

[piquark6046]

https://github.com/AdguardTeam/AdguardBrowserExtension/issues/2095#issuecomment-1695625590

That's just a comment left during communicating a Slack DM with @Alex-302.