1433701 - Scrollbars aren't displayed on some pages or after zooming

Status: RESOLVED DUPLICATE of bug 1281907

(Core :: Panning and Zooming, defect, P3)

Description

[Jan Henning [:JanH]]

This affects some, but not all pages.

Working:
http://www.456bereastreet.com/lab/html5-input-types/
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/datalist

Not working:
http://ftp.mozilla.org/pub/mobile/nightly/latest-mozilla-central-android-api-16/
http://www.456bereastreet.com/lab/html5-input-types/

I'm not absolutely certain yet, but I've got a feeling that pages in the "not working" category are mainly/only (?) Desktop pages without a corresponding <meta viewport tag.

Additionally, even on pages in the "working" category, the scroll bars disappear if I pinch zoom in/out from the original zoom level.

On the MDN page, zooming out restores the scroll bars, presumably because I can't zoom out further than the initial zoom level, while on 456bereastreet.com, which uses <meta name="viewport" content="width=320; initial-scale=1.0;"> I can zoom back out further than the initial zoom level, in which case the scroll bars go AWOL as well.

Hazarding a guess (haven't checked it yet), the scrollbars are possibly only displayed properly when the zoom level (document resolution) is ≈ 1.0?

Comment 1

[Kartikaya Gupta (email:[e-mail])]

What I said at https://bugzilla.mozilla.org/show_bug.cgi?id=1281907#c3 applies here too.