328209 - Monospaced text on a web page vanishes as scale changes

Status: RESOLVED DUPLICATE of bug 237085

(Firefox :: General, defect)

Description

[Rob Griffiths]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.9a1) Gecko/20060222 Firefox/1.6a1
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.9a1) Gecko/20060222 Firefox/1.6a1

When viewing a page with lines of output in a monospaced font, some of the output will turn invisible as page scale is increased via Command-Plus. This doesn't happen with all text on all sites, but it is reproducible.

I see it most often when using phpmyadmin (www.phpmyadmin.net) to export SQL data from a database. When viewing the export dump, certain rows will be invisible, based on the viewing scale.

Reproducible: Always

Steps to Reproduce:
1. Export some data using phpmyadmin
2. Change the scale up and down, using Command-Plus and -Minus
3. Observe the vanishing rows of text

Actual Results:  
Text vanishes, yet can be selected and copied.

Expected Results:  
Text should remain visible.

I uploaded a movie of this effect here:

http://www.robservatory.com/movies/resize_bug3.mov

As the movie shows, all rows are only visible at very small scales. As soon as the scale increases, lines begin to vanish. Since they're still selectable, this isn't a critical issue, but it is quite annoying.

Comment 1

[Uri Bernstein]

This is a duplicate of bug 237085 (and/or of some of the other dependencies of  Bug 302294).

*** This bug has been marked as a duplicate of 237085 ***