1327451 - It's possible to accidentally trigger weird DOM fullscreen warning box transition

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Open https://www.youtube.com/watch?v=mD3v1B_aXw0 or attachment 8666690 [details]
2. Click fullscreen button to switch to DOM fullscreen
3. Open new focused FF window in normal (not maximized) mode above the window from Step 2 (Ctrl+N)
4. Quickly move mouse to the top side of the window from Step 2 and immediately click

AR:
 Fullscreen warning box first slides from above the top side of the screen to the place ~100px
 below the top side of the screen. Then it immediately moves right to the top side of the screen,
 stays there for a while, then slides to the place above the screen (becomes invisible)



STR_2:  (difference in Step 4)
1. Open https://www.youtube.com/watch?v=mD3v1B_aXw0 or attachment 8666690 [details]
2. Click fullscreen button to switch to DOM fullscreen
3. Open new focused FF window in normal (not maximized) mode above the window from Step 2 (Ctrl+N)
4. Quickly move mouse to the top side of the window from Step 2, almost immediately (~0.2s) click,
   then immediately move mouse towards the bottom, i.e. ~to the center of the screen

AR:
 Fullscreen warning box briefly appears. First it slides from above the top side of the screen,
 but it doesn't even becomes fully visible when it starts moving back to the top, and eventually
 becomes invisible. So, it's appears only for ~0.5s



STR_3:  (difference in Steps 4, 5)
1. Open https://www.youtube.com/watch?v=mD3v1B_aXw0 or attachment 8666690 [details]
2. Click fullscreen button to switch to DOM fullscreen
3. Open new focused FF window in normal (not maximized) mode above the window from Step 2 (Ctrl+N)
4. Quickly move mouse to the top side of the window from Step 2 and click with delay ~0.4s
5. Wait 10 seconds, then move mouse in horizontal space above the warning box

AR:
 Fullscreen warning box first slides from above the top side of the screen to the very top of the
 screen (0px from the top side). Then after a while (~3s) it starts moving to the bottom, and stops
 in a new position - ~100px from the top side of the screen.
 In Step 5 nothing happens - fullscreen warning box doesn't disappear. See Note 1.



ER:
 Fullscreen warning box should start moving to the "0px from the top" position, when I hover mouse
 over some area that triggers it
 When I focus window with DOM fullscreen, the warning box should forget its former goal and start
 moving to "100px from the top" position.
 Then it should stay still during predetermined timeout (~3s, right?).
 Then it should start hiding if there is/was no mouse interaction.




Notes:
1) I encountered these bugs when I was using 2 monitors at the same time. During the very first day!
2) STR_3: I accidentally moved mouse from one monitor to another and then noticed that the 1st monitor
   displays fullscreen warning box for a very long time.

Comment 1

[castiel743]

Attachment: screencast 1 - DOM fullscreen weird transition STR_1.webm

Comment 2

[castiel743]

Attachment: screencast 2 - DOM fullscreen weird transition STR_2.webm

Comment 3

[castiel743]

Attachment: screencast 3 - DOM fullscreen weird transition STR_3.webm