1597060 - [Linux] When picture in picture is active, new windows appear beneath Firefox's main window

Status: UNCONFIRMED

(Toolkit :: Picture-in-Picture, defect, P3)

Description

[s1]

Attachment: Screen record from 2019-11-17 02.43.06.mp4

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0

Steps to reproduce:

1. Watch a video on Firefox
2. Pop it out using the Picture in Picture feature

Actual results:

New windows that I open open beneath the main Firefox window.

I provided a screen recording to demonstrate how the Terminal as an example, shows up properly if Picture in Picture is not in use but as soon as I enable it, the Terminal then opens beneath and I have to focus on the window manually.

Expected results:

It should open normally, over the main Firefox window.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Mike Conley (:mconley) (:⚙️)]

Any idea why this might be happening, Martin?

Comment 3

[s1]

I noticed that Firefox's picture-in-picture uses a "normal" sub-window that is just set to be always on top as opposed to a proper "palette" style window which is permanently floating. Which is why on Windows 10, the picture-in-picture shows up on the taskbar as a separate entry whereas it should not show up there at all for a proper PiP implementation

Comment 4

[Martin Stránský [:stransky] (ni? me) (PTO, back on Feb 17)]

I don't quite understand what's wrong here, at least from the screencast...the PIP is always on top, terminal opens as active with focus...are you sure you attached a correct video or do I miss something?
Thanks.

Comment 5

[Martin Stránský [:stransky] (ni? me) (PTO, back on Feb 17)]

Ah I think I see it now - do you mean that the first terminal launch opens a terminal window behind main Firefox window?

Comment 6

[s1]

(In reply to Martin Stránský [:stransky] from comment #5)

Ah I think I see it now - do you mean that the first terminal launch opens a terminal window behind main Firefox window?

Yeah, but it's not just the Terminal, other applications do too.

Comment 7

[Martin Stránský [:stransky] (ni? me) (PTO, back on Feb 17)]

It looks like a Elementary OS/ Pantheon / LightDM specific bug. I can't reproduce it on Gnome and there's not reason the new application window is opened behind the Firefox one.