21476 - Scrollbars of fixed positioned DIV don't display correctly

Status: VERIFIED FIXED

(Core :: Layout, defect, P3)

Description

[troy]

This problem only happens if gfx scrollbars are enabled. test12 initially
displays incorrectly (no scrollbars displayed), and then if the window is
resized the scrollbars appear.

The other problem is that the scrollbars don't repaint correctly. If you grab
the thumb and drag it the content scrolls correctly, but the scrollbar doesn't
repaint.

If you obscure the window and then expose it again it does paint correctly

Comment 1

[Peter Trudelle]

One problem per bug report, please.  Which problem is this bug report supposed
to represent?  In any case, moving to m14.

Comment 2

[troy]

No, it's not okay that fixed positioning is broken. We either need to fix this
or revert to native scrollbars...

Comment 3

[Eric Vaughan]

I'm looking at this. Its very weird and it only happens when the position is
fixed. Somehow the styles are being lost. In any event it will have to be fixed
for beta.

Comment 4

[Peter Trudelle]

putting on beta1 radar

Comment 5

[Eric Vaughan]

Patrick,

Does this happend with the current build?

Comment 6

[Jos.vandenOever]

it still happens with build 2000031516.
see e.g.
http://www.fenk.wau.nl/~oever/INDEX~1.HTM
this is from CSS2 specification

Comment 7

[Eric Vaughan]

targeting

Comment 8

[Rob Kaper]

Still a problem in the nightly build of 2000.03.23. Scrollbars function but are
not drawn.

Bug history: 

Everything worked fine in M11, using native scrollbars.

M12/13 did draw the scrollbars, but caused some problems with the layer size. It
looked as if a [vertical] scrollbar was drawn, effectively decreasing the
available area for the layer, causing another [horizontal] scrollbar to appear,
instead of recalculating the available layer size.

This was fixed in M14, however now scrollbars are working, just not shown.

Hope this history helps understanding the situation and a possible fix.

Comment 9

[Peter Trudelle]

Mass-moving most M15 bugs to M16

Comment 10

[Eric Vaughan]

Basically fixed positioned things with scrollbars just don't work. So this 
should be beta2

Comment 11

[Chris Petersen]

With the June 2nd builds, I don't see scroll bars on the fixed position DIV. The  
status of this report is Resolved/fixed. What do I need to verify here ?

Comment 12

[Chris Petersen]

Fixed in the June 30th build.

Comment 13

[Daniel Veditz [:dveditz]]

Adding keyword to bugs which already show a nsbeta2 triage value in the status 
whiteboard so the queries don't get screwed up.