1691204 - Nested child window appearing below parent window

Status: RESOLVED DUPLICATE of bug 1691214

(Firefox :: Untriaged, defect)

Description

[dhilsen]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0

Steps to reproduce:

1. Situation: Parent window contains multiple links to child windows, child windows are nested within parent window and all child windows use same viewing window. (For example, parent window contains links to various photos with each photo opening in the same viewer. The viewer is a smaller window which sits on top of parent window. )
2. The first time a child window is opened it correctly appears on top of parent window.
3. The second time a child window is opened, and all subsequent openings of a child window, the child window appears underneath parent window. If the parent window is full screen the child window is not visible.
4. Upon

Actual results:

Child window is hidden from view.

Expected results:

Newly opened child window should have appeared on top of parent window.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Can you attach a test-case that reproduces the issue? That'd make it possible to bisect it or look at what is going on, because it depends on how the windows are opened etc.

Comment 2

[dhilsen]

Thank you for requesting a test case, I'm happy to help out. The specific situation in which we're observing this behavior is occurring on a password protected company site. Would it be possible to send you screen images from the browser inspector showing the HTML surrounding the links used to open the windows?

Comment 3

[dhilsen]

Some further information that might be helpful:
The issue seems to be tied to the case in which the child window is not closed prior to clicking on another link in the parent window. The sequence that seems to be causing the issue is:

Situation: Parent window has link to smaller child window which opens on top of parent window.

1. Click on link to open child window.
2. With the child window remaining open, click on parent window to bring parent window back on top.
3. Clicking on link in parent window to re-open child window does not bring child window to the top. It remains below parent window.

Comment 4

[Emilio Cobos Álvarez (:emilio)]

(In reply to dhilsen from comment #2)

Thank you for requesting a test case, I'm happy to help out. The specific situation in which we're observing this behavior is occurring on a password protected company site. Would it be possible to send you screen images from the browser inspector showing the HTML surrounding the links used to open the windows?

That might be enough, but hard to say.

An alternative, assuming this used to work on older versions of Firefox, would be to run mozregression to figure out what change broke it. Narrowing that down might help to know what we're looking for. Would you be able to do that?

Comment 5

[dhilsen]

(In reply to Comment #4)
The above referenced Bug #1691214 does indeed appear to describe the issue I've raised here.

Comment 6

[Emilio Cobos Álvarez (:emilio)]

Can you confirm this is fixed on Nightly? Thanks.