149599 - Personal toolbar and scrollbar have rubberbanding effect

Status: RESOLVED WORKSFORME

(Core Graveyard :: Skinability, defect)

Description

[Urban A. Haas]

There is often a rubberbanding effect on the personal toolbar and vertical
scrollbar. The occurs in 1.0 and later nightlies.

Comment 1

[Urban A. Haas]

Attachment: Attaching testcase screenshot

I'm attaching a zipped rtf document (from wordpad) that has an image embedded.

Comment 2

[Urban A. Haas]

Further testing indicates this is more reproducable by bringing having the
window behind another window, then bringing the covered up window to the front
by the taskbar or windows title bar. Interestingly clicking on the skin seems to
not cause the problem.

Comment 3

[Michael Lee Yohe]

I attempted to open the screenshot as an RTF - it's garbled data.  Can you
simply attach a JPEG, GIF, or PNG?

Comment 4

[Urban A. Haas]

Attachment: Attachment testcase screenshot

I'm reattaching as a jpeg

Comment 5

[Urban A. Haas]

I have not been able to reporduce it with the classic theme. Only the modern.
I'm using build 2002060408.

Comment 6

[Stephen Jungels]

Attachment: Screenshot (Classic)

I see this bug frequently in both themes (Mozilla 1.0, Windows 2k).  Nothing
special is required to reproduce it, just load a long (or wide) page and scroll
it.  Stripes, bands, specks, and other garbage will appear in the scrollbars
intermittently.

Screenshot of Classic is attached.  (FWIW, I noticed some dependence on window
size when I took a smaller screen shot to fit under bugzilla's 150k size
limit.)

Stephen

Comment 7

[Stephen Jungels]

Attachment: Screenshot (Modern)

More subtle effect with Modern...

Stephen

Comment 8

[Stephen Jungels]

Here is a workaround for those with hardware similar to mine:  

1. Right click from the desktop and select Properties > Settings > Advanced >
Troubleshooting.

2. Move the hardware acceleration slider at least one click back from "Full."

My graphics card is an ATI RAGE MOBILITY-M PCI.  You may be able to solve the
problem on another card by experimenting with this setting.  

For bug-fixers: the setting which fixes the problem for me is described as
"Disable cursor and bitmap accelerations."

Comment 9

[Stephen Jungels]

I was hoping to get hardware acceleration back so I downloaded a new driver from
IBM.  No luck.  Here is my current configuration:

Mozilla 2002070508
Windows 2000 SP2
IBM Thinkpad a21e
ATI RAGE MOBILITY-M PCI
Display driver product version: M6.12-020417m2-003835C-IBM

I still need to disable cursor and bitmap accelerations to get rid of artifacts
in the scrollbars.

Comment 10

[Michael Lefevre]

reporter (Urban): can you reproduce this bug with a recent build of mozilla (for
example, 1.2)? if so, please comment again with details. if not, please resolve
this bug as WORKSFORME. thanks.

Comment 11

[Tahir]

Attachment: More profound version of the same effect

This is an image of Mozilla 1.2 on Red Hat Linux 8.0. The same phenomenon
happens in the viewport of Galeon too.

Comment 12

[Urban A. Haas]

It's been a while, seems to be working in recent builds. Will continue to
monitor and change back if the problem reoccurs.