1299670 - Nightly does not allow moving the window when holding down on title bar with a maximized window

Status: NEW

(Core :: Widget: Win32, defect, P3)

Description

[u554753]

Mozilla/5.0 (Windows NT 10.0; rv 51.0) Gecko/20100101 Firefox/51.0

[Pre-Requisites] 
Window is in full screen mode

javascript.options.asyncstack; false
browser.tabs.remote.force-enable; true
browser.tabs.remote.autostart.2; true 
about:support Multiprocess Windows 1/1 (Enabled by user)
layers.async-pan-zoom.enabled; true 
about:support Asynchronous Pan/Zoom wheel input enabled; touch input enabled


[Steps to Reproduce]
1. Navigate to a URL (eg: http://www.whatisblik.com/ )
2. Click on the icon to make the browser full screen
3. Using mouse or finger on touch screen hold and press on the Title Bar to drag the windows

[Expected Results]
The window minimizes and can be moved around.

[Actual Results]
Nothing happens. (See attached video)
Video: https://gwimberly-softvision.tinytake.com/sf/OTQ2MDY1XzM5NzQyNDQ

[Note]
This appears regardless of whether e10s is enabled or not.

Comment 1

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

I don't understand this bug. From the video it looks like you're just trying to drag the window around while it's maximized, which isn't something that works in Microsoft Windows, at all. From the STR it's not clear what you mean by "make the browser full screen" - are you just maximizing the window, or are you making it fullscreen (F11), or is there some button the page that you're using to fullscreen (I didn't see any)?

Comment 2

[u554753]

Hi Kats, 

Sorry for not clarifying. This is for maximizing the window, not full screen. I have edited the title accordingly.

If you press the maximize button in the top right corner of Nightly, and drag the title bar, it should be able to be moved around.

Comment 3

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

(In reply to Grover Wimberly IV [:Grover-QA] from comment #2)
> If you press the maximize button in the top right corner of Nightly, and
> drag the title bar, it should be able to be moved around.

Ah, ok, thanks for clarifying. I tried these STR in the latest Nightly with and without e10s, touch and mouse, and in all cases it seemed to work as expected. I suspect this is not handled by our code but by Windows, maybe there is a Windows setting that controls it?

(In reply to Grover Wimberly IV [:Grover-QA] from comment #0)
> [Note]
> This appears regardless of whether e10s is enabled or not.

Given you're seeing it without e10s as well I don't think this is touch related.