[Bug]: Warning flood at boot and shutdown

[pallaswept]

I have:

• Searched if this issue hasn't been reported yet.
• Verified that I am using the latest version (see Widget settings > About page or top right corner for version 1.1.0 and later), should be the same as https://github.com/luisbocanegra/plasma-panel-colorizer/releases/latest

Install method used:

• Using Plasma's "Add new widget" (KDE Store)
• AUR
• Nix package
• Manually from the latest source code
• OBS package

Describe the bug
A clear and concise description of what the bug is.

I see many (eg 100-200) of these warning messages, only at boot up and shut down time:

Aug 21 20:00:15 Pallas plasmashell[3033]: QPainter::begin: Paint device returned engine == 0, type: 2
Aug 21 20:00:15 Pallas plasmashell[3033]: PanelColorizer::updatePanelMask: QPainter is not active

Steps to reproduce

1. Reboot
2. Check logs with journalctl --since="1 hour ago" -g qpainter

Observed Result
Many of the above pair of messages

Expected Result
Nice clean logs

System information (please complete the following):

Run kinfo on a terminal and paste the output bellow

> kinfo
Operating System: openSUSE Tumbleweed 20260819
KDE Plasma Version: 6.7.4
KDE Frameworks Version: 6.29.0
Qt Version: 6.11.1
Kernel Version: 7.1.8-1-default (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 32 GiB of RAM (30.9 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 3090

Additional context
Thanks!

[luisbocanegra]

I can't reproduce this, do you know when it started happening?

Some time ago I fixed the QPainter::begin: Paint device returned engine == 0 warning fbd55a3 by ignoring hidden widgets. But here it seems to be happening for other reason, maybe a Qt bug?

[pallaswept]

Sorry mate I've no idea - I went to try and answer that same question and it goes back to the beginning of my log, so it's been happening for several months. I'll mess with my config and some qt debug logs and see if I can figure out a more specific trigger.