97126 - Scrolling flashes, has poor performance when tooltip is over content window

Status: VERIFIED INCOMPLETE

(Core :: XUL, defect)

Description

[Joe Drew (not getting mail)]

If a tooltip is over the content window, scrolling causes the exposed area to
flash and scrolling itself is much slower than normal. This happens at least on
Linux, but has not been tested on Windows.

Steps to reproduce:
1. Click in the content area to ensure it has the focus.
2. Hover over one of the personal toolbar links, and wait for the tooltip to pop up.
3. Scroll using the arrow keys. Note the flashing and poor performance.

This happens on all pages AFAICT.

Comment 1

[Ryan Pertusio]

This doesn't seem to be affecting Windows 2000 (Build 20010827).. so it is
possibly "linux specific" as you might guess.

Reporter, could you mention your build ID?
(build ID is found at the top of a Mozilla window)

Comment 2

[sairuh (rarely reading bugmail)]

would this be a toolkit issue?

Comment 3

[Joe Drew (not getting mail)]

This is present in 0.9.3 (2001080104), as well as nightlies. If not present on
Windows, I would suspect this is a Linux (or gtk, or something)-only issue.

Comment 4

[John Morrison]

Yes, I see this on Linux. I get a flash in a region at the bottom (when 
scrolling down) of the content area, about the height of the tooltip. 

Not sure who owns this: seems related to views and linux compositing, but 
I don't know where you would run into this aside from the case of having
the tooltip window showing.

(Note: when running in Classic, and scrolling down, with or without tooltip,
you will see a flood of gdk assertions: that is bug 95160).

Comment 5

[Blake Ross]

This is not an xpapps bug. Starting with toolkit.

Comment 6

[Nochum Sossonko [:Natch]]

Is this bug still valid/reproducible? This was never a problem on Windows, and I don't have a linux box to test.

Comment 7

[Tyler Downer [He/Him]]

@Reporter, we have not heard back from you in a while, so I am closing this bug as INCOMPLETE. You can reopen this bug if more information becomes available. Some helpful information you can provide us is found at http://quality.mozilla.org/bug-writing-guidelines. You should also use a recent version of Firefox, from http://www.getfirefox.com.