1962816 - Print output layout is broken, when printing "writing-mode: vertical-rl" content to an actual printer (i.e. not the built-in Save-to-PDF print target)

Status: NEW

(Core :: Printing: Output, defect)

Description

[Alice0775 White]

Attachment: testcase.html

STR:

1. Open attached testcase.html
2. Print, e.g. Microsoft Print to PDF

Actual results:
The print preview appears to be correct. However, the print result is completely corrupted.

Regression window:
https://hg-edge.mozilla.org/integration/autoland/pushloghtml?fromchange=d735e197d708d85d9b7e7cb1ea3609bdc4f27bd6&tochange=7387be4b195f3f266410d8faafbaf80f8176e293

Comment 1

[Alice0775 White]

Attachment: print_output.pdf

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

:jfkthame, since you are the author of the regressor, bug 739096, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 3

[Daniel Holbert [:dholbert]]

I can reproduce, when printing the testcase to the "Microsoft Print to PDF" print target.
I can also reproduce when printing the testcase to an actual printer (Brother HL-2280DW).

But for whatever reason, I cannot reproduce when printing to our built-in Save-to-PDF print backend. So that's sort-of a workaround, I suppose. (i.e. you can avoid this bug by first printing to the Save-to-PDF backend, and then printing the resulting PDF (whether from Firefox or any PDF viewer) to the print target where you really want to print)

Comment 5

[Daniel Holbert [:dholbert]]

Attachment: testcase 2 (from dupe bug)

Here's a testcase from dupe bug 1962676. This testcase has "This is a test" written vertically (with "T" at the top), but Alice0775 White posted a printed result https://bugzilla.mozilla.org/attachment.cgi?id=9481160 which shows the letters placed in the reverse order, with "T" at the bottom.