243367 - divElement.style.MozOpacity property makes DIV disappear for any value less than 1

Status: RESOLVED DUPLICATE of bug 228441

(Core :: CSS Parsing and Computation, defect)

Description

[Chris Holland]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.6) Gecko/20040206 Firefox/0.8
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.6) Gecko/20040206 Firefox/0.8

://home.earthlink.net/~hollandct/bugzilla/firefox/osx/mozopacity.html

you'll see that setting the MozOpacity to any value below 1 (parseFloat on form
input) renders that layer fully transparent.

This appears to only be an issue with Mozilla 1.6 on OS X:
OS X Mozilla 1.3: MozOpacity works as expected
OS X Mozilla 1.5: MozOpacity works as expected
OS X Mozilla 1.6: MozOpacity does NOT work as expected
OS X FireFox 0.8: MozOpacity does NOT work as expected

I downloaded Mozilla 1.6 for Win32 and MozOpacity/-moz-opacity work just fine on
there.

See more isolation information at:
http://bugzilla.mozilla.org/show_bug.cgi?id=243352
from my original FireFox project filing.

I've researched other MozOpacity bugs but i don't think they're directly tied to
this one, but FYI here's a Win32 one:
http://bugzilla.mozilla.org/show_bug.cgi?id=228399



Reproducible: Always
Steps to Reproduce:
1. go to http://home.earthlink.net/~hollandct/bugzilla/firefox/osx/mozopacity.html
2. keep 0.5 MozOpacity value and hit return (or click button)
3. change value to 1 and hit return (or click button)
4. try out values from 0.0 to 1

You may ignore the second "Opacity" button: it is only there for reference to
test style.opacity which is currently not meant to be supported by Mozilla.

This issue also occurs when setting opacity via -moz-opacity.
Actual Results:  
DIV goes completely transparent when using any value below 1.

Expected Results:  
DIV should reflect various levels of opacity based on specified values.

I'm on Mac OS X Panther, 10.3.3 Build 7F44

Comment 1

[Chris Holland]

Attachment: HTML test case of divElement.style.MozOpacity/-moz-opacity CSS property

A more updated version of this attachment might also be available at:
http://home.earthlink.net/~hollandct/bugzilla/firefox/osx/mozopacity.html

Comment 2

[Boris Zbarsky [:bzbarsky]]

> User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US;
> rv:1.6) Gecko/20040206 Firefox/0.8

This has been fixed for a while... that build is really old (it branched off the
trunk back in early November, while this was fixed in February).

*** This bug has been marked as a duplicate of 228441 ***