15509 - {css2} absolutely positioned overflowing text has undefined rendering

Status: VERIFIED FIXED

(Core :: Layout, defect, P3)

Description

[Hixie (not reading bugmail)]

When an element is absolutely positioned, and the background is not
transparent, and the background doesn't completely cover the font, then the
areas of the background that the font does not cover will have an undefined
background, leaving large bits of gack behind.

See this test case:
http://www.bath.ac.uk/~py8ieh/internet/projects/mozilla/absolute-font-paint.html

Note. To make this obvious you may have to resize your window a lot, or visit
a black-on-white page then jump to this page.

Comment 1

[troy]

Looks like a recent regression when Peter and I added code to make sure the view
visibility was correct.

What happened is that the view is marked as fully opaque, when it should not
because, as you noted, the text is spilling outside of the background and hence
the overflow should be transparent

Comment 2

[Chris Petersen]

With the Oct 13th build 1999101312, the problem is fixed.

Comment 3

[Hixie (not reading bugmail)]

Migrating from {css2} to css2 keyword. The {css1}, {css2}, {css3} and {css-moz}
radars should now be considered deprecated in favour of keywords.
I am *really* sorry about the spam...