[23134] in Athena Bugs
sun4 9.2.10: mozilla
daemon@ATHENA.MIT.EDU (Nathan J. Williams)
Sun Jul 20 12:45:50 2003
Message-Id: <200307201645.h6KGjmPP005661@w20-575-90.mit.edu>
To: bugs@MIT.EDU
Date: Sun, 20 Jul 2003 12:45:48 -0400
From: "Nathan J. Williams" <nathanw@MIT.EDU>
System name: w20-575-90.mit.edu
Type and version: Sun-Blade-100 9.2.10
Display type: ifb
Shell: /bin/athena/tcsh
Window manager: ctwm-beta -W
What were you trying to do?
Scroll in a document in Mozilla.
What's wrong:
Scrolling line-by-line with the arrow keys did not redraw quite
the correct amount, and chopped part of each line of text off.
What should have happened:
The full height of the characters should have been displayed.
Please describe any relevant documentation references:
Document that generated this behavior: The "LCD Module FAQ" at:
http://www.mil.ufl.edu/imdl/handouts/lcd-faq.htm
I took a screenshot of this phenomenon. The top of the page as it should
look is at:
/mit/nathanw/Public/mozilla-scrolltext-good.pnm
The same page, after pressing the page down key once and then the
up-arrow key to get back to the top of the page:
/mit/nathanw/Public/mozilla-scrolltext-bad.pnm
A similar effect occurs when scrolling down, or when scrolling by clicking
the arrows in the scrollbar. The text is cleaned up after switching to a
different workspace and switching back to Mozilla, which causes a redraw.
I was not able to reproduce this with all pages I visited; nothing about
the source of the page in question seemed obviously suspicious.
After writing up most of this report, I checked the Mozilla version on
this workstation and discovered that it is 1.2.1; knowing that there's
a newer version in the works, I ran Mozilla 1.4 out of
/afs/dev/system/sun4x_59/srvd/usr/athena/lib/mozilla (by copying the
bin/mozilla script to /tmp and changing moz_libdir in that script to point
to the dev cell mozilla libdir) and re-ran the experiment, but got the same
results.
