Bug 235066 - REGRESSION(?): Printing PDF from iframe result in blank page
Summary: REGRESSION(?): Printing PDF from iframe result in blank page
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Frames (show other bugs)
Version: Safari 15
Hardware: Mac (Apple Silicon) macOS 12
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2022-01-11 07:42 PST by cyril
Modified: 2022-01-12 09:32 PST (History)
2 users (show)

See Also:

Attachments
Simple proof of concept to highlight the issue. (167.44 KB, application/zip)
2022-01-11 07:42 PST, cyril 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description cyril 2022-01-11 07:42:34 PST 
Created attachment 448847 [details]
Simple proof of concept to highlight the issue.

Programmatically printing a PDF from an iframe result in a blank page. 

You can find an archive attached to this message, on which you can run a web server to reproduce the issue. 

If a `setTimeout` is set (1000ms in the attached example) before the call to `print()`, the 
first attempt works (see `working-print.png` in the attached archive)

However if we click on "cancel", successive attempts result in a blank page, after asking "This web page is trying to print. Do you want to print this web page?". 
(See `failed-print.png` in the attached archive). 

So far I have only reproduced the bug on Safari. I have tested it on last versions of Firefox (95) and Chrome (97) without the bug happening. 

It seems that the bug has been introduced in a recent version of Safari, as it used to work before.
Comment 1 Radar WebKit Bug Importer 2022-01-12 09:32:51 PST 
<rdar://problem/87464058>