162565 - Rendering simple HTML pages shifts 2 pixels down for each line in the page.

Status: RESOLVED WORKSFORME

(Core :: Layout, defect, P2)

Description

[Moied]

Rendering simple HTML pages shifts 2 pixels down for each line in the page.

Rendering of a simple HTML pages is different when compared with different
branch builds, this is a regression bug since Build 2002-07-24-08-1.0. Open
attached test case with 2002-07-24-08-1.0 build renders fine, but when rendered
in any builds after 2002-07-25-08-1.0 we can observe there is a shit of 2 pixels
for each line in the HTML page, also we can notice that a vertical scroll bar
appears for this same testcase with all builds after Aug 25. Im attaching
Screenshot's  of builds from 24 and 25 to demonstrate this bug. 

Reproducible: Always
Steps to Reproduce:
1.open attached test case using 2002-07-24-08-1.0 branch build or earlier builds.
2.open attached test case using 2002-07-25-08-1.0 branch build or later builds.
2.Notice the difference in the height of page 


Actual Results:  The height of the page is different and we also see a vertical
scroll bar for this page.

Expected Results:  The height of the HTML page should be same in all the builds.

Comment 1

[Moied]

Attachment: Test case demonstrate this bug.

Comment 2

[Moied]

There is small typo with build numbers its 2002-07-23 instead of
2002-07-24-08-1.0 and 2002-07-24 instead of 2002-07-25-08-1.0, sorry about this. 

Comment 3

[Moied]

Attachment: Screenshot from 07-23 branch build or earlier builds.

Comment 4

[Moied]

Attachment: Screenshot from 07-24 branch build or later builds.

Comment 5

[Boris Zbarsky [:bzbarsky]]

If I recall correctly, we fixed windows font metrics code to not be broken
recently..

Comment 6

[Shanjian Li]

that's caused by line-height change. We now include external leading in normal
line-height. It is not a problem. 

Comment 7

[Shanjian Li]

mark it as wfm.