1652310 - Master password modal dialog is not rendered properly in wayland

Status: RESOLVED INVALID

(Core :: Graphics: WebRender, defect, P3)

Description

[Aitor]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Steps to reproduce:

I started Firefox with a master password set and then triggered an action that required access to protected information.

In OpenSUSE Tumbleweed having GDK_BACKEND=wayland on a Lenovo Thinkpad X1 Yoga 3rd gen:

00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5914] (rev 08)
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07)

Software:

• kwin 5.19.2
• Mozilla Firefox 78.0.1

Running in wayland with GDK_BACKEND=wayland and gfx.webrender.all=true.

Actual results:

The master password modal dialog prompts but it is not rendered properly. the dialog is rendered blank.
Entering the password blindly works as expected, the master password is accepted.

Expected results:

The modal dialog should have been rendered correctly with the password input box.

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

[Aitor]

Attachment: Mozilla_password_modal_wrong.png

This is how it is rendered initially. Pretty much blank.

Comment 3

[Aitor]

Attachment: Mozilla_password_modal_rendered.png

Once an action is performed on the window (resize, move, etc), the dialog is rendered.

Comment 4

[Martin Stránský [:stransky] (ni? me)]

Can you try mutter compositor please? You can run it as nested compositor, i.e.:

$mutter --wayland --nested &
$WAYLAND_DISPLAY=wayland-1 MOZ_ENABLE_WAYLAND=1 ./firefox

Comment 6

[Aitor]

Apologies, for the delay but had some issues running mutter on my system.
I can't reproduce this issue in mutter which suggests that maybe it is a kwin issue.

Is there something Firefox should fix in this regard or should it be reported to KDE kwin's devs?

Thanks so much!

Comment 7

[physkets]

I no longer have this issue after updating to KDE Plasma 5.20.0 .

Comment 8

[Aitor]

Fixed for me as well after 5.20 upgrade.