1707695 - [KDE] Dialog boxes are laggy

Status: RESOLVED DUPLICATE of bug 1717351

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

Description

[mi2rivtj]

Attachment: bug

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0

Steps to reproduce:

1. Create a bookmark
2. Right click on the bookmark > properties.

Actual results:

The window displays in a laggy way, with blank rectangle that fills with the window elements after 2 seconds approximately. This started happening when I upgrade to v88.

Comment 1

[mi2rivtj]

Note: I'm using Kubuntu 21.04

Comment 2

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

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 3

[mi2rivtj]

This also happens in the About Firefox. I was using Kubuntu, but I'm having the same issue in KDE Neon:

Operating System: KDE neon 5.21
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-73-generic
OS Type: 64-bit
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-8265U CPU @ 1.60GHz
Memory: 15,5 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620

Comment 4

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

Let's wait for Plasma 5.12 as it has more Wayland fixes. Would be great to test it in another compositor - mutter/sway.

Comment 5

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

Can you please test latest nightly under Wayland? A new popup handling code landed there.
Thanks.

Comment 6

[mi2rivtj]

Should I wait 5.22? It will be available in 8th of June. Also, this is permanently broken in X11?

Comment 7

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

Can you use mozregression tool to find which commit caused it? I think it's SW-WR switch but we need to know for sure.
How-to is here:
https://fedoraproject.org/wiki/How_to_debug_Firefox_problems?rd=Bug_info_Firefox#Use_Mozregression_tool
Thanks.

Comment 8

[mi2rivtj]

It says that 87.0 doesn't exist.

./mozregression --good 87.0 --bad 88.0.1

---

You should use a config file. Please use the --write-config command line flag to help you create one.

---

0:00.53 INFO: Assuming repo mozilla-release
0:00.53 INFO: Using tag FIREFOX_88_0_1_RELEASE for release 88.0.1
0:02.48 INFO: 87.0 is not a release, assuming it's a hash...
0:02.48 INFO: Getting mozilla-release builds between 87.0 and FIREFOX_88_0_1_RELEASE
0:03.76 ERROR: The url 'https://hg.mozilla.org/releases/mozilla-release/json-pushes?changeset=87.0' returned a 404 error because the push is not in this repo (e.g., not merged yet).

Comment 9

[mi2rivtj]

Ah! It just had to put 87 instead of 87.0. I ran "/mozregression --good 87 --bad 88.0.1" but it gave me version 86.0! In this version, this issue doesn't happen.

Comment 10

[mi2rivtj]

Well, since FF 89 uses Proton-styled modal dialog, this issue doesn't happen anymore.

Comment 11

[mi2rivtj]

Nevermind. Some parts of Firefox still use this type of dialog, like the ones to accept downloads and to view the Firefox version.

Comment 12

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

Please re-test with new nightly as it gets another popup fixes.
Thanks.

Comment 13

[mi2rivtj]

It seems that is not happening anymore. I'm also not having this bug in 89.0.1, was it backported?

Comment 14

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

This should to be fixed in Firefox 92 by new multi-buffer backend.