367122 - Empty html list control has a scrollbar thumb

Status: RESOLVED WORKSFORME

(Core :: Layout: Form Controls, defect)

Description

[Martijn Wargers (dead)]

Attachment: testcase

See testcase, the first list control has a (useless) scrollbar thumb, while the second has not. I think both list controls should look the same, like the second list control.
There is no clear regression range.
Something regressed between 2006-03-12 and 2006-03-17, which makes both list controls look bad.
Between 2006-05-29 and 2006-06-01, the current situation is created.

Comment 1

[Mats Palmgren (inactive)]

FWIW, for the first range I have 2006-03-15-04 -- 2006-03-16-04 (Linux), perhaps bug 192767?  I don't see any suspects in the second range.

Comment 2

[Wayne Woods]

On Mac OS X, BOTH scrollbars appear between 20060315-05 and 20060316-05, which agrees with the above two cases.

But the scrollbar for the second example vanishes again between 20060326-05 and 20060327-04, 11 days later. Quite a bit earlier than in the description (presumably for Windows?).

Martijn, are you able to check again for your second regression dates? It could be a platform difference, but it's odd that they're so different to mine.

I'm not certain what was responsible for the re-removal of the second example:
http://bonsai.mozilla.org/cvsquery.cgi?treeid=default&module=all&branch=HEAD&branchtype=match&dir=&file=&filetype=match&who=&whotype=match&sortby=Date&hours=2&date=explicit&mindate=20060326+00%3A00%3A00&maxdate=20060327+10%3A00%3A00&cvsroot=%2Fcvsroot
Maybe bug 331458, but maybe the check-ins for bug 330934. The reason I suspect the latter is that it touches nsGfxScrollFrame.cpp, and a patch to that was required to fix a different regression caused by bug 192767 (see bug 330673).

Comment 3

[Martijn Wargers (dead)]

Wayne, yes, you are probably right, now I'm seeing a second regression date between 2006-03-25 and 2006-03-31 (I don't have builds between those dates, atm).

Comment 4

[Mats Palmgren (inactive)]

WFM, Nightly on Linux, OSX and Win 7.  (there's no scrollbar at all on OSX for
either list but I think that's expected)