https://bugs.kde.org/show_bug.cgi?id=461119
Bug ID: 461119
Summary: QT application window maximized by double clicking the
title bar becomes unresponsive if QT screen scale
factor is 2
Classification: Plasma
Product: kwin
Version: 5.26.2
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-x11-standalone
Assignee: kwin-bugs-n...@kde.org
Reporter: 1466040...@qq.com
Target Milestone: ---
Created attachment 153264
--> https://bugs.kde.org/attachment.cgi?id=153264&action=edit
maximizing dolphin becomes unresponsive.
SUMMARY
I am using Arch Linux. After updating plasma to version 5.26.2-1, QT-based
applications will be irresponsible if **the screen scale factor is 2** and the
windows are **maximized by double click the title bar**.
pacman update log (It seems that qt5-base may also cause the problem...):
```
# sudo grep 10-28 /var/log/pacman.log
[2022-10-28T23:10:42+0800] [PACMAN] Running 'pacman -S -y -u --config
/etc/pacman.conf --'
[2022-10-28T23:10:42+0800] [PACMAN] synchronizing package lists
[2022-10-28T23:10:42+0800] [PACMAN] starting full system upgrade
[2022-10-28T23:10:55+0800] [PACMAN] Running 'pacman -S -y -u --config
/etc/pacman.conf --'
[2022-10-28T23:10:55+0800] [PACMAN] synchronizing package lists
[2022-10-28T23:10:55+0800] [PACMAN] starting full system upgrade
[2022-10-28T23:11:10+0800] [ALPM] transaction started
[2022-10-28T23:11:10+0800] [ALPM] upgraded icu (71.1-1 -> 72.1-1)
[2022-10-28T23:11:10+0800] [ALPM] upgraded libxml2 (2.10.3-1 -> 2.10.3-2)
[2022-10-28T23:11:11+0800] [ALPM] upgraded expat (2.4.9-1 -> 2.5.0-1)
[2022-10-28T23:11:11+0800] [ALPM] upgraded bind (9.18.7-1 -> 9.18.8-1)
[2022-10-28T23:11:11+0800] [ALPM] upgraded harfbuzz (5.3.1-1 -> 5.3.1-3)
[2022-10-28T23:11:11+0800] [ALPM] upgraded fontconfig (2:2.14.0-1 ->
2:2.14.1-2)
[2022-10-28T23:11:11+0800] [ALPM-SCRIPTLET] Rebuilding fontconfig cache...
[2022-10-28T23:11:21+0800] [ALPM] upgraded libxrender (0.9.10-5 -> 0.9.11-1)
[2022-10-28T23:11:21+0800] [ALPM] upgraded systemd-libs (251.6-2 -> 251.7-1)
[2022-10-28T23:11:21+0800] [ALPM] upgraded curl (7.85.0-2 -> 7.86.0-1)
[2022-10-28T23:11:21+0800] [ALPM] upgraded systemd (251.6-2 -> 251.7-1)
[2022-10-28T23:11:23+0800] [ALPM] upgraded qt5-base (5.15.6+kde+r180-1 ->
5.15.6+kde+r181-1)
[2022-10-28T23:11:23+0800] [ALPM] upgraded libical (3.0.16-1 -> 3.0.16-2)
[2022-10-28T23:11:23+0800] [ALPM] upgraded flac (1.4.1-2 -> 1.4.2-1)
[2022-10-28T23:11:23+0800] [ALPM] upgraded xfsprogs (5.19.0-1 -> 5.19.0-2)
[2022-10-28T23:11:23+0800] [ALPM] upgraded bluedevil (1:5.26.1-1 -> 1:5.26.2-1)
[2022-10-28T23:11:23+0800] [ALPM] upgraded boost-libs (1.80.0-2 -> 1.80.0-3)
[2022-10-28T23:11:23+0800] [ALPM] upgraded kdecoration (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:24+0800] [ALPM] upgraded breeze (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:24+0800] [ALPM] upgraded breeze-gtk (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:24+0800] [ALPM] upgraded gdk-pixbuf2 (2.42.9-1 -> 2.42.10-1)
[2022-10-28T23:11:24+0800] [ALPM] upgraded svt-av1 (1.2.1-1 -> 1.3.0-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded qt5-webengine (5.15.10-3 ->
5.15.11-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded discover (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded docker (1:20.10.19-1 ->
1:20.10.20-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded docker-compose (2.12.0-1 ->
2.12.2-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded python-psutil (5.9.2-1 -> 5.9.3-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded python-more-itertools (8.14.0-1 ->
9.0.0-1)
[2022-10-28T23:11:25+0800] [ALPM] upgraded python-typing_extensions (4.3.0-1 ->
4.4.0-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-trove-classifiers
(2022.9.26-1 -> 2022.10.19-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-setuptools (1:63.4.2-1 ->
1:63.4.3-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded drkonqi (5.26.1-2 -> 5.26.2-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded enchant (2.3.3-1 -> 2.3.3-2)
[2022-10-28T23:11:26+0800] [ALPM] upgraded freerdp (2:2.8.1-1 -> 2:2.8.1-2)
[2022-10-28T23:11:26+0800] [ALPM] upgraded gtk-update-icon-cache (1:4.8.1-1 ->
1:4.8.2-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded nodejs (18.11.0-2 -> 19.0.0-2)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-argon2_cffi (21.3.0-1 ->
21.3.0-2)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-backcall (0.2.0-6 -> 0.2.0-7)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-pure-eval (0.2.2-1 ->
0.2.2-2)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-ipykernel (6.16.1-1 ->
6.16.2-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-jupyter_client (7.4.3-1 ->
7.4.4-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-terminado (0.16.0-1 ->
0.17.0-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-tomlkit (0.11.5-1 ->
0.11.5-2)
[2022-10-28T23:11:26+0800] [ALPM] upgraded python-tinycss2 (1.1.1-1 -> 1.2.1-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded jupyterlab (3.4.8-1 -> 3.5.0-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded kactivitymanagerd (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded kde-cli-tools (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:26+0800] [ALPM] upgraded kde-gtk-config (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:27+0800] [ALPM] upgraded libksysguard (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:27+0800] [ALPM] upgraded ksystemstats (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:27+0800] [ALPM] upgraded libqalculate (4.4.0-1 -> 4.4.0-2)
[2022-10-28T23:11:27+0800] [ALPM] upgraded milou (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:27+0800] [ALPM] upgraded layer-shell-qt (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:27+0800] [ALPM] upgraded kscreenlocker (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:28+0800] [ALPM] upgraded kwin (5.26.1-1 -> 5.26.2.1-1)
[2022-10-28T23:11:28+0800] [ALPM] upgraded plasma-integration (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:28+0800] [ALPM] upgraded libkscreen (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:28+0800] [ALPM] upgraded kpipewire (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:29+0800] [ALPM] upgraded oxygen-sounds (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:29+0800] [ALPM] upgraded smbclient (4.17.1-1 -> 4.17.2-1)
[2022-10-28T23:11:29+0800] [ALPM] upgraded taglib (1.12-2 -> 1.13-1)
[2022-10-28T23:11:32+0800] [ALPM] upgraded plasma-workspace (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:33+0800] [ALPM] upgraded kdeplasma-addons (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:33+0800] [ALPM] upgraded systemsettings (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:33+0800] [ALPM] upgraded kgamma5 (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded khotkeys (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded libmbim (1.26.4-1 -> 1.28.0-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded libqmi (1.30.8-1 -> 1.32.0-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded kinfocenter (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded kmenuedit (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded kscreen (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded ksshaskpass (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded kwallet-pam (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded kwayland-integration (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded kwrited (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:34+0800] [ALPM] upgraded lsof (4.96.3-1 -> 4.96.4-1)
[2022-10-28T23:11:35+0800] [ALPM] upgraded lxd (5.6-2 -> 5.7-1)
[2022-10-28T23:11:35+0800] [ALPM] upgraded multipath-tools (0.9.1-1 -> 0.9.3-1)
[2022-10-28T23:11:35+0800] [ALPM] upgraded oh-my-zsh-git (r6670.a7d910c3a6-1 ->
r6674.49691b58b3-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded oxygen (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded perl-alien-build (2.71-1 -> 2.72-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded plasma-browser-integration (5.26.1-1
-> 5.26.2-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded polkit-kde-agent (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded plasma-desktop (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded plasma-disks (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:36+0800] [ALPM] upgraded plasma-firewall (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-nm (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-pa (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-sdk (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-systemmonitor (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-thunderbolt (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-vault (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded plasma-workspace-wallpapers
(5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded powerdevil (5.26.1-1 -> 5.26.2-1)
[2022-10-28T23:11:37+0800] [ALPM] upgraded python-colorama (0.4.5-1 -> 0.4.6-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded qt5-webkit (5.212.0alpha4-16 ->
5.212.0alpha4-17)
[2022-10-28T23:11:38+0800] [ALPM] upgraded vte-common (0.68.0-2 -> 0.70.1-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded tracker3 (3.4.0-1 -> 3.4.1-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded vte3 (0.68.0-2 -> 0.70.1-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded remmina (1:1.4.27-1 -> 1:1.4.27-2)
[2022-10-28T23:11:38+0800] [ALPM] upgraded sudo (1.9.11.p3-1 -> 1.9.12-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded systemd-sysvcompat (251.6-2 ->
251.7-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded vim-runtime (9.0.0354-1 ->
9.0.0814-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded vim (9.0.0354-1 -> 9.0.0814-1)
[2022-10-28T23:11:38+0800] [ALPM] upgraded xdg-desktop-portal-kde (5.26.1-1 ->
5.26.2-1)
[2022-10-28T23:11:42+0800] [ALPM] transaction completed
[2022-10-28T23:11:43+0800] [ALPM] running '20-systemd-sysusers.hook'...
[2022-10-28T23:11:43+0800] [ALPM] running '30-systemd-catalog.hook'...
[2022-10-28T23:11:43+0800] [ALPM] running '30-systemd-daemon-reload.hook'...
[2022-10-28T23:11:43+0800] [ALPM] running '30-systemd-hwdb.hook'...
[2022-10-28T23:11:44+0800] [ALPM] running '30-systemd-sysctl.hook'...
[2022-10-28T23:11:44+0800] [ALPM] running '30-systemd-tmpfiles.hook'...
[2022-10-28T23:11:44+0800] [ALPM-SCRIPTLET] fchmod() of /dev/snd/seq failed:
Operation not permitted
[2022-10-28T23:11:44+0800] [ALPM-SCRIPTLET] fchmod() of /dev/snd/timer failed:
Operation not permitted
[2022-10-28T23:11:44+0800] [ALPM] running '30-systemd-udev-reload.hook'...
[2022-10-28T23:11:44+0800] [ALPM] running '30-systemd-update.hook'...
[2022-10-28T23:11:44+0800] [ALPM] running '30-update-mime-database.hook'...
[2022-10-28T23:11:44+0800] [ALPM] running '40-fontconfig-config.hook'...
[2022-10-28T23:11:44+0800] [ALPM] running 'dbus-reload.hook'...
[2022-10-28T23:11:45+0800] [ALPM] running 'detect-old-perl-modules.hook'...
[2022-10-28T23:11:45+0800] [ALPM] running 'fontconfig.hook'...
[2022-10-28T23:11:45+0800] [ALPM] running 'gtk-update-icon-cache.hook'...
[2022-10-28T23:11:45+0800] [ALPM] running 'update-desktop-database.hook'...
```
I run the arch container in LXD, and I made a snapshot before upgrading. After
restoring the snapshot, the issue disappeared.
If the screen scale factor is 1 or 1.5, The issue won't appear neither. Scale
factor bigger than 2 is not tested.
STEPS TO REPRODUCE
1. upgrade plasma version to 5.26.2 (maybe qt5-base (5.15.6+kde+r180-1 ->
5.15.6+kde+r181-1)),
2. open dolphin/konsole,
3. double click the title bar,
4. you see grey boxes in the right and bottom of the window, and the window
becomes unresponsive.
OBSERVED RESULT
grey boxes in the right and bottom of the window, and the window becomes
unresponsive.
EXPECTED RESULT
maximizing window should be ok.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.26.2
(available in About System)
KDE Plasma Version:
KDE Frameworks Version: 5.99.0
Qt Version: Version 5.15.6 (built against 5.15.6)
ADDITIONAL INFORMATION
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