Opened 2 years ago

Last modified 21 months ago

#21973 needs_information defect

Fonts settings changed badly in 7.0a3 on Win 7

Reported by: cypherpunks Owned by: tbb-team
Priority: Medium Milestone:
Component: Applications/Tor Browser Version:
Severity: Normal Keywords: ff52-esr, tbb-7.0-issues, tbb-regression
Cc: Actual Points:
Parent ID: #18097 Points:
Reviewer: Sponsor:


Fonts look blurry in Browser Console, something is wrong or is this a new feature?
Security Settings text becomes scrollable when set to High.

Child Tickets

Attachments (1)

badfonts.png (12.2 KB) - added by cypherpunks 2 years ago.

Download all attachments as: .zip

Change History (14)

comment:1 Changed 2 years ago by gk

Keywords: ff52-esr added
Status: newneeds_information

So, in 7.0a2 things are still fine and 7.0a3 is the first version that shows this new behavior?
Regarding the security settings: do you mean you get a scrollbar allowing you to scroll the text? If so, that's intended. Once the text does not fit anymore into the allocated space that scrollbar should show up helping you to read all of the text nevertheless.

7.0a2 bundles for testing can be found on

comment:2 Changed 2 years ago by gk

Oh, and could you point us to some screenshots showing the 7.0a2 and 7.0a3 differences?

Changed 2 years ago by cypherpunks

Attachment: badfonts.png added

comment:3 Changed 2 years ago by cypherpunks

Now even Medium settings don't fit.

comment:4 Changed 2 years ago by gk

So, you are reporting two different things in one bug: the scrollbar showing up now and fonts looking badly in the browser console. The first is not overly problematic too me as you still can see the explanation on every security level pretty easily.

I am not sure about your other issue yet. Could you attach a screenshot of the problem with 7.0a3 and a similar screenshot with 7.0a2 to understand the differences on your system better?

comment:5 Changed 2 years ago by cypherpunks

It might be a new content backend (Skia, have you noticed that?) or things like

comment:6 Changed 23 months ago by cypherpunks

Status: needs_informationnew

When I switched content backend back to cairo, the situation improved: scrollbar on High only. But Tor Browser suddenly hangs on browser console now.

comment:7 Changed 22 months ago by gk

Keywords: tbb-7.0-issues tbb-regression added

Regressions since 6.X.

comment:8 Changed 22 months ago by cypherpunks

It could be related to that Tor Browser uses DirectWrite font rendering mechanism now.

comment:9 Changed 22 months ago by cypherpunks

Parent ID: #18097

skia gets "ClearType tuning parameters for directwrite/d2d".

comment:10 Changed 21 months ago by cypherpunks

Maybe, that's also because Mozilla didn't update esr52 with

comment:12 in reply to:  11 Changed 21 months ago by gk

Status: newneeds_information

Replying to cypherpunks:

Maybe. Could anybody experiencing this problem with Tor Browser test whether this is really not an issue with our font fingerprinting defense by checking with a normal Firefox 52 ESR and reporting back whether the same issue is visible?

comment:13 Changed 21 months ago by cypherpunks

What this ticket about is not an issue with our font fingerprinting defense, but DirectWrite could be, also note that it depends upon the DirectWrite's back-end

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