New-Tab Download Isolation Bug Repro (DOM Mode)

This page reproduces the download failure seen in SGH ED and Panorama (SV-32430).

Requirement: Test this in SafeView DOM mode. The bug causes the new tab to open and remain completely blank (about:blank) without starting the download.

Case 1: Download via window.open()

Opens a new tab directly at an attachment URL. This is the core failing pattern.

Uses backend file: attachment_csv.php

Case 2: Download via HTML target="_blank"

Same as Case 1, but using a standard HTML anchor tag.

Download CSV (New Tab)

Uses backend file: attachment_csv.php

Case 3: Panorama XML Config Export (SV-32430)

1:1 mirror of the Panorama admin console behavior. Direct popup to an XML attachment.

Uses backend file: config_export.php

Case 4: SGH Redirected Download (BE-537)

Simulates backend preparation delay followed by a 302 redirect to the attachment file.

Uses backend file: config_export_prepare.php