1064775 - Link-text cut off at bottom depending on how the page is loaded

Status: RESOLVED WORKSFORME

(Core :: Layout: Text and Fonts, defect)

Description

[Elbart]

Attachment: linktext.png

Nightly 2014-09-08 (also happening in safe mode or HWA disabled)
Windows 7 SP1

Does not happen in IE11 or Chrome 37.



Depending on which URL you're opening, the link-text shown in the posting will be cut off at the bottom or not. Best way to test it is with a clean profile/cache.

good: https://derstandard.at/Jetzt/Livebericht/2000005312443/1000012699/1000409794/Jetzt-Ich-bin-Fussballfan-sicher-kein-braver

bad: https://derstandard.at/Jetzt/Livebericht/2000005312443/1000012699/Jetzt-Ich-bin-Fussballfan-sicher-kein-braver

In the Inspector, there are no difference in "Rules" or "Computed".

Comment 1

[Loic]

It's an issue about HiDPI. If I set the resolution to 125% in Win 7, I'm not able to reproduce it.
If I set to 100%, it's reproducible.

Comment 2

[Alice0775 White]

Attachment: reduced html

Comment 3

[Alice0775 White]

Attachment: object box size

something rounding problem for layout

Comment 4

[Alice0775 White]

This problem seems not to happen when HWA is disabled.

Comment 5

[Loic]

I have the issue with HWA enabled on the old FF17, I think it's related to HiDPi too: http://i.imgur.com/twnH184.png

Comment 6

[Alice0775 White]

So, definitely rounding error of the Gecko engine.

It's undignified bug of rendering engine. This should fix!

Comment 7

[Elbart]

With the testcase of comment 2 (thank you!) and gfx.font_rendering.directwrite.enabled;true, the regression-range is

Last good revision: 059e9961a122 (2010-02-25)
First bad revision: 475768f37b1a (2010-02-26)
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=059e9961a122&tochange=475768f37b1a

Probably
0e1c0b71bf13	Bas Schouten — Bug 527707: Add Direct2D and DirectWrite backend integration to thebes and widget. Preffed off by default r=jrmuizel r=jmathies r=jfkthame


Can you confirm this?

Comment 8

[Elbart]

(In reply to Alice0775 White from comment #3)
> Created attachment 8487622 [details]
> object box size
> 
> something rounding problem for layout

Filed bug 1099061 for this.

Comment 9

[Elbart]

Also happening in Ubuntu.

Is this maybe a dupe of bug 442139?

Comment 10

[Peter Magyari (Desktop QA)]

Since this is a very old report and I wasn't able to reproduce it myself I'm going to close it for now.

Feel free to re-open if the issue is still reproducible for you.

Thanks!