1512461 - [PDF Viewer] Embedded font in PDF not displaying correctly

Status: RESOLVED FIXED

(Firefox :: PDF Viewer, defect)

Description

[lunde]

Attachment: U+8F00 and friends as displayed in Firefox, with the problematic glyphs highlighted

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36

Steps to reproduce:

I am running Firefox Version 63.0.3 on macOS Version 10.14.1 (aka Mojave).

I opened the official code chart for Unicode's "CJK Unified Ideographs" block (aka URO) via the following URL: https://www.unicode.org/charts/PDF/U4E00.pdf

The latest version (above URL) is 11.0, but this also reproduces in the 12.0 Beta code chart: https://www.unicode.org/Public/12.0.0/charts/blocks/U4E00.pdf


Actual results:

In the latest (Version 11.0) code charts, the G-Source (first column) representative glyphs do not display correctly for the following ranges:

U+8536 through U+85FC
U+8700 through U+87FC
U+8900 through U+89FC
U+8B00 through U+8BFC
U+8D00 through U+8DFC
U+8F00 through U+8FFC
U+9100 through U+91FC
U+9300 through U+93FC
U+9500 through U+95FC
U+9700 through U+97FC
U+9900 through U+99FC
U+9B00 through U+9BFC
U+9D00 through U+9DFC

In the 12.0 Beta code chart, it's the same behavior, except that the following range is slightly smaller:

U+8596 through U+85FC

The other ranges are affected in the same way.


Expected results:

When displaying the same PDF in other browsers, such as Chrome or Safari, the glyphs display correctly. Attached is an excerpt from the latest code chart that starts from U+8F00.

Comment 1

[lunde]

Also look at the Version 10.0 code chart: https://www.unicode.org/Public/10.0.0/charts/CodeCharts.pdf

Similar behavior, but the affected ranges appear to be slightly greater, starting from U+8324:

U+8324 through U+83FC
U+8500 through U+85FC
U+8700 through U+87FC
U+8900 through U+89FC
U+8B00 through U+8BFC
U+8D00 through U+8DFC
U+8F00 through U+8FFC
U+9100 through U+91FC
U+9300 through U+93FC
U+9500 through U+95FC
U+9700 through U+97FC
U+9900 through U+99FC
U+9B00 through U+9BFC
U+9D00 through U+9DFC

Comment 2

[lunde]

The following is a summary of the behavior in three versions of the "CJK Unified Ideographs" (URO) block in the code charts:

Version 10.0           Version 11.0           Version 12.0 Beta
U+8324 through U+83FC
U+8500 through U+85FC  U+8536 through U+85FC  U+8596 through U+85FC
U+8700 through U+87FC  U+8700 through U+87FC  U+8700 through U+87FC
U+8900 through U+89FC  U+8900 through U+89FC  U+8900 through U+89FC
U+8B00 through U+8BFC  U+8B00 through U+8BFC  U+8B00 through U+8BFC
U+8D00 through U+8DFC  U+8D00 through U+8DFC  U+8D00 through U+8DFC
U+8F00 through U+8FFC  U+8F00 through U+8FFC  U+8F00 through U+8FFC
U+9100 through U+91FC  U+9100 through U+91FC  U+9100 through U+91FC
U+9300 through U+93FC  U+9300 through U+93FC  U+9300 through U+93FC
U+9500 through U+95FC  U+9500 through U+95FC  U+9500 through U+95FC
U+9700 through U+97FC  U+9700 through U+97FC  U+9700 through U+97FC
U+9900 through U+99FC  U+9900 through U+99FC  U+9900 through U+99FC
U+9B00 through U+9BFC  U+9B00 through U+9BFC  U+9B00 through U+9BFC
U+9D00 through U+9DFC  U+9D00 through U+9DFC  U+9D00 through U+9DFC

Comment 3

[lunde]

I checked the Version 8.0 and 9.0 code charts, and the behavior appears to be the same as the Version 10.0 ones, in terms of the affected ranges. See: https://www.unicode.org/Public/8.0.0/charts/CodeCharts.pdf & https://www.unicode.org/Public/9.0.0/charts/CodeCharts.pdf

Comment 4

[Brendan Dahl [:bdahl]]

This appears to be fixed in at least Firefox 65. A colleague tried 63 and it was broken, but 65 also worked for them. I haven't tried 64 yet.

Comment 5

[Brendan Dahl [:bdahl]]

Was fixed by bug 1489996.

Comment 6

[lunde]

Many thanks for checking Firefox 65, and for confirming on your end that Firefox 63 still exhibits this bug.

Comment 7

[lunde]

Firefox 64 was released today, and I just confirmed that it fixes this issue.