https://bugs.kde.org/show_bug.cgi?id=519978
Bug ID: 519978
Summary: Discover encounters GlobalDrawerActionItem polish loop
when using bold/black font with Chinese language
Classification: Applications
Product: Discover
Version First 6.6.4
Reported In:
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: discover
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
# Discover encounters GlobalDrawerActionItem polish loop when using bold/black
font with Chinese language
After upgrading from Kubuntu 25.04 to Kubuntu 26.04, I noticed that the
Discover software center became extremely sluggish, whereas this issue did not
occur previously. No other applications exhibit this behavior. Discover
continuously loops through error messages, causing severe unresponsiveness. The
error messages are as follows:
``` text
qrc:/qt/qml/org/kde/kirigami/controls/private/GlobalDrawerActionItem.qml:36:18:
QML RowLayout: possible QQuickItem::polish() loop
qrc:/qt/qml/org/kde/kirigami/controls/private/GlobalDrawerActionItem.qml:36:18:
QML RowLayout: RowLayout called polish() inside updatePolish() of RowLayout
qrc:/qt/qml/org/kde/kirigami/controls/private/GlobalDrawerActionItem.qml:36:18:
QML RowLayout: possible QQuickItem::polish() loop
(repeated several more times)
No QSGTexture provided from updateSampledImage(). This is wrong.
No QSGTexture provided from updateSampledImage(). This is wrong.
No QSGTexture provided from updateSampledImage(). This is wrong.
(repeated a dozen or so more times)
```
Trigger conditions: Using **Simplified Chinese (LANGUAGE=zh_CN)** with the
**system user interface font set to Bold or Black weight**.
The issue does NOT occur under these conditions: Font weight set to the default
Regular or Medium, or language set to English (LANGUAGE=en_US).
## System Information
```text
Discover: 6.6.4
Ubuntu 26.04 LTS (Wayland)
KDE Frameworks: 6.24.0
Qt: using 6.10.2, built with 6.10.2.
Unknown/Default
Build ABI: x86_64-little_endian-lp64
Kernel: linux 7.0.0-15-generic
```
``` text
Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.4
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-15-generic (64-bit)
Graphics Platform: Wayland
Processors: 24 × 13th Gen Intel® Core™ i7-13700KF
Memory: 32 GiB of RAM (31.1 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 4070 Ti SUPER
Manufacturer: ASUS
```
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