1126026 - Small 1px strip at top of Firefox when in fullscreen of a window opened with all bars disabled

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[spaam03]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0
Build ID: 20150108202552

Steps to reproduce:

Always
1. Change dom.disable_window_open_feature.location; to false
2. window.open() call with javascript and all menubar, location, toolbar, scrollbars, titlebar, status = 0
3. Go fullscreen on new opened window with F11


Actual results:

As mouse is hovering the very top of the window a little white bar (1px) drops down.
When you set browser.fullscreen.autohide; to false then it constantly appears.


Expected results:

This 1px strip shouldn't be there, if you go fullscreen and removed all Toolbars and fields.

Comment 1

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/message/reply/question/etc.)]

As far I remember it will be probably WONFIXED per: bug 490621 Comment 11

Dão Gottwald [:dao] - Is it still valid?

Comment 3

[Dão Gottwald [:dao]]

(In reply to Virtual_ManPL [:Virtual] from comment #1)
> As far I remember it will be probably WONFIXED per: bug 490621 Comment 11
> 
> Dão Gottwald [:dao] - Is it still valid?

Comment 0 seems to talk about something different, a white bar...

Comment 4

[spaam03]

After reading https://bugzilla.mozilla.org/show_bug.cgi?id=490621 I understand, where the white bar comes from. (Browser UI)
So there is no way to get rid of it? 
Or is there some config variable to turn off the hover area in the top?
thanks

Comment 5

[Wayne Mery (:wsmwk)]

Andreas, does this still exist?

Comment 6

[Andreas Wagner [:TheOne] [use NI]]

Unfortunately I cannot check since I am no longer using Windows.

Comment 7

[Tim Giles [:tgiles]]

No longer reproducible as far as I can tell. I see no issue when setting browser.fullscreen.autohide to false and opening new windows via window.open() as described in Comment #0.