Text Turns Blue During Vertical Scrolling




5 years ago
4 years ago


(Reporter: jonc, Unassigned)


23 Branch

Firefox Tracking Flags

(Not tracked)




5 years ago
User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0 (Beta/Release)
Build ID: 20130803192641

Steps to reproduce:

1. Install Firefox 23.0 on Ubuntu and Ubuntu derivatives.

2. Scroll vertically, either direction.

Actual results:

Body text -- standard 16pt text and smaller -- turns blue while the display is being scrolled.

Text returns to black instantly when scrolling stops.

Disabling "Smooth Scrolling" corrects this.  Toggling "Hardware Acceleration" has no impact.

Hardware:  ThinkPad W530 with Nvidia K1000M 2-gig video and onboard Intel.  Problem persists when BIOS is set for discrete card, Optimus, or Nvidia-only with Nvidia driver.

Expected results:

Text should not turn blue when the page is scrolled.
Thanks for taking the time to report this! 
Could you attach a screenshot of the problem?

Does the problem happen if you start Firefox in Safe Mode? See http://support.mozilla.com/en-US/kb/Safe+Mode
Flags: needinfo?(jonc)

Comment 2

5 years ago
The text needs to be moving, so no screenshot.

Yes, it persists in Safe Mode with smooth scrolling enabled.
Flags: needinfo?(jonc)


5 years ago
Component: Untriaged → Graphics: Text
Product: Firefox → Core
Do you also reproduce this with a clean profile: http://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles ?

After you update your Flash and GPU driver, the problem still persists?

Comment 4

5 years ago
I'll try a clean profile when I have time to figure out how to save and restore my current profile.

However, the blue text appears on first use of Firefox on a newly installed system.  I've checked.  In Fedora 19, as well.

Flash is 11,2,202,297.  The graphics driver is whatever is current in Ubuntu 13.04 w/ (On Fedora, it was also present using an Nvidia driver. I haven't intalled Nvidia on Ubuntu here.)

Comment 5

4 years ago
jonc, Do you still see this when using a current version?
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