1299985 - Japanese email is displayed with different font and it's ugly since 2016-08-27 build

Status: RESOLVED FIXED

(Thunderbird :: Message Reader UI, defect)

Description

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: screenshot of 2016-08-27 build

Starting from Daily build of 2016-08-27 <http://ftp.mozilla.org/pub/thunderbird/nightly/2016/08/2016-08-27-03-02-23-comm-central/thunderbird-51.0a1.en-US.win32.zip>, Japanese text in email is displayed with odd font and it's very ugly. As far as I've tested, font settings are not changed from 2016-08-26 build <http://ftp.mozilla.org/pub/thunderbird/nightly/2016/08/2016-08-26-03-02-02-comm-central/thunderbird-51.0a1.en-US.win32.zip>.

Comment 1

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: font settings of 2016-08-27

Comment 2

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: Japanese font settings of 2016-08-27

Comment 3

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: screenshot of 2016-08-26 build (expected result)

Comment 4

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: font settings of 2016-08-26

Comment 5

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: Japanese font settings of 2016-08-26

Comment 6

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Oh, looks like the font or font size of text in dialog is also changed.

gfx might have changed something?

Comment 7

[Alice0775 White]

Maybe due to Bug 1007702.

Comment 8

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Yes, you're right. Removing "skia" from "gfx.content.azure.backends" fixes this bug.

I'm not sure what should we do for this, though...

Comment 9

[Jonathan Kew [:jfkthame]]

Looks like perhaps Skia may be ignoring embedded bitmaps in the font?

Comment 10

[Jorg K (CEST = GMT+2)]

Not much TB can do about this I'm afraid. I hope Mason has a solution. There is already bug 1299903, but that's about the MS standard fonts.

Comment 11

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

(In reply to Jonathan Kew (:jfkthame) from comment #9)
> Looks like perhaps Skia may be ignoring embedded bitmaps in the font?

Yeah, it's possible... (Although, I'm not sure.)

Comment 12

[Jorg K (CEST = GMT+2)]

Does the display change when you turn HWA on/off? Please extract the message into a HTML file and view that in Firefox. I assume it looks bad there, too.

Comment 13

[Mason Chang [Inactive] [:mchang]]

Do you have cleartype enabled?

Comment 14

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

(In reply to Mason Chang [:mchang] from comment #13)
> Do you have cleartype enabled?

I have not touched any gfx.font-rendering.cleartype* settings (so, all of them are displayed as default state in about:config). And of course, I enabled ClearType in settings of Windows 10.

Comment 15

[Mason Chang [Inactive] [:mchang]]

Bug 1300025 should fix this. Can you please verify this in a day or two? Thanks!

Comment 16

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Sorry for the delay due to my vacation.

I confirmed that this is fixed in the latest Daily. Thank you!