629844 - Mouse scroll wheel in downwards direction moves cursor to upper left screen corner

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[Iamnot1bitofspam]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.10) Gecko/20100922 Ubuntu/10.10 (maverick) Firefox/3.6.10
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.10) Gecko/20100922 Ubuntu/10.10 (maverick) Firefox/3.6.10

Only in the downards direction and immediately after a mouse wheel scroll the cursor moves up and to the left, infrequently. More frequent with newly switched tabs or upon restarting scrolling down text.  This is a end of January 2011 vanilla virtualized oobuntu build and I do not get this behavior on any other windows. Not really a big deal, but occurs frequently enough to be noticeable and annoying.

Reproducible: Sometimes

Steps to Reproduce:
1. Open a tab with text loaded
2. Scroll down using the mouse wheel
3. Watch as the cursor goes to the upper left corner at a random downward input
Actual Results:  
If I double scroll down sometimes the cursor goes to the original position, instead of moving downards a second time as expected. Otherwise reproducible.

Expected Results:  
There should be no cursor reset.

First bug report. A search of "scroll wheel" "upper left" turned up nothing. This behavior is very strange to me even after years of firefox usage. I am reachable by email.

Comment 1

[Iamnot1bitofspam]

I just managed the same behavior on upwards scrolling on this very page. Seems more infrequent than the downward direction but not possible to ascertain without statistical sampling.

Comment 2

[George Carstoiu]

This is not browser related. Switching resolution to Resolved Invalid.