1328067 - [e10s] <select> is limited by content area

Status: RESOLVED WONTFIX

(Core :: Layout: Form Controls, defect, P2)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 52, 32bit, ID 20161001030430 (2016-10-01)
STR_1:
1. Open url   data:text/html,<select><option>1<option>2</select><style>select{position:fixed;bottom:0}
2. Resize window so that there was enough space between the window and the bottom of the screen
3. Click on <select>

AR:  List of options appears above <select>, i.e. it's limited to content area
ER:  Either X or Y
 X) e10s <select> shouldn't be limited to content area
 Y) non-e10s <select> (e.g. in devtools and "Share this page" panel) should also be limited

Blocks:
1276976

This is regression from bug 1276976. Regression range:
> https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=7fc8f70a567d4492607906d40532ef4a7124c8f5&tochange=2ce7e838634b204dcec9487452cabc20d709c4d6

Comment 1

[Hsin-Yi Tsai (she/her) [:hsinyi]]

[Triage] it's easy to imagine that this issue could be hit quite easily if the option list is longer. Would be good to fix this soon-ish, P2.

Comment 2

[Ben Tian (inactive)]

Attachment: screenshot-of-clipped-dropdown-list

Screenshot of clipped dropdown list.

Comment 3

[Ben Tian (inactive)]

Blake, can you CC me in bug 1276976 or share reason behind its decision to limit <select> to content area?

Bug 1276976 results in this bug but owner Neil seems unavailable. I'd like to understand reason behind bug 1276976 to see whether/how we should solve this bug.

Comment 4

[Timothy Nikkel (:tnikkel)]

(In reply to Hsin-Yi Tsai (55 Regression Engineering support) [:hsinyi] from comment #1)
> [Triage] it's easy to imagine that this issue could be hit quite easily if
> the option list is longer. Would be good to fix this soon-ish, P2.

You see as much of the select dropdown as the content area allows, which seems quite reasonable. If the content area is so small as to now allow even a single option in the select area to show you won't see anything, which is unfortunate, but the content area to begin with is basically unusable. If the content area is a reasonable size that people actually use the select dropdown is perfectly usable. If there are cases where the content area is a realistic size that people actually use and the select dropdown is display sub-optimally then we'd want to fix, otherwise no.

Comment 5

[Hsin-Yi Tsai (she/her) [:hsinyi]]

(In reply to Timothy Nikkel (:tnikkel) from comment #4)
> (In reply to Hsin-Yi Tsai (55 Regression Engineering support) [:hsinyi] from
> comment #1)
> > [Triage] it's easy to imagine that this issue could be hit quite easily if
> > the option list is longer. Would be good to fix this soon-ish, P2.
> 
> You see as much of the select dropdown as the content area allows, which
> seems quite reasonable. If the content area is so small as to now allow even
> a single option in the select area to show you won't see anything, which is
> unfortunate, but the content area to begin with is basically unusable. If
> the content area is a reasonable size that people actually use the select
> dropdown is perfectly usable. If there are cases where the content area is a
> realistic size that people actually use and the select dropdown is display
> sub-optimally then we'd want to fix, otherwise no.

Thanks :tnikkel for the additional remarks that sound reasonable.

Comment 6

[Ben Tian (inactive)]

Resolve as WONTFIX per comment 4.