1347464 - Some combination of fonts causes a baseline shift on printing

Status: NEW

(Toolkit :: Printing, defect)

Description

[Toru Kawakubo]

Attachment: print-line-height.html

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:55.0) Gecko/20100101 Firefox/55.0
Build ID: 20170314030215

Steps to reproduce:

1. Open the attached HTML file.
2. Confirm that all of 30 lines are rendered inside a red rectangle without any overflow.
3. Print the page. (For example, on macOS open the print dialog and choose "Open PDF in Preview" from "PDF" dropdown menu to see print result on screen)


Actual results:

The lower half of the last line overflows the red rectangle and clipped by it.
It seems that some combination of fonts (in this case Libre Baskerville and Courier) causes a slight baseline shift on printing, resulting in pushing the last line over the bottom edge of the red rectangle.


Expected results:

All the 30 lines should be rendered inside the red rectangle without any overflow.

Comment 1

[Toru Kawakubo]

Attachment: Rendering result (left: on screen, right: printed to PDF)

Comment 2

[Carmen Fat [:cfat] - Ecosystem QA (PTO until Oct 11th, please contact [e-mail] instead for any requests)]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:55.0) Gecko/20100101 Firefox/55.0

Hello and thanks for the report!
Following the STR from comment 0, I was able to reproduce the issue on all Firefox channels, using MAC OS X.

Comment 3

[Julien Cristau [:jcristau]]

Too late for firefox 52, mass-wontfix.