QGIS 3.30 Panel text becomes unreadable when switching to Dark Mode while using default UI theme

[hernanrr]

What is the bug or the crash?

When the system switches to Dark Mode while one is using the default UI theme, the text in the panels remains black, on a dark gray background, making it unreadable.

The issue does not persist when restarting QGIS.

Steps to reproduce the issue

1. Start with the System Settings in Light Mode. On a Mac Ventura: Go to System Settings > Appearanceand click Light.
2. Start QGIS using the default UI theme. If not already enabled, go to Preferences... > General > UI Theme and select default, then restart QGIS.
3. Switch System Settings to Dark Mode by going to System Settings > Appearanceand clicking Dark.
4. The QGIS UI should now look like this:

Versions

QGIS version	3.30.0-'s-Hertogenbosch	QGIS code revision	f186b8efe0
Qt version	5.15.2
Python version	3.9.5
GDAL/OGR version	3.3.2
PROJ version	8.1.1
EPSG Registry database version	v10.028 (2021-07-07)
GEOS version	3.9.1-CAPI-1.14.2
SQLite version	3.35.2
PDAL version	2.3.0
PostgreSQL client version	unknown
SpatiaLite version	5.0.1
QWT version	6.1.6
QScintilla2 version	2.11.5
OS version	macOS 13.4

Active Python plugins QuickOSM | 2.2.2 profiletool | 4.2.6 DataPlotly | 4.0.1 quick_map_services | 0.19.33 QWater | 3.1.8 SRTM-Downloader | 3.1.17 processing | 2.12.99 grassprovider | 2.12.99 db_manager | 0.1.20 MetaSearch | 0.3.6

Supported QGIS version

• [X] I'm running a supported QGIS version according to the roadmap.

New profile

• [X] I tried with a new QGIS profile

Additional context

If the same steps are followed starting from Dark Mode and switching to Light Mode, the panel text in QGIS remains white on a white background, making it unreadable.

No response

[adriankwiat]

I have the same problem on Linux with Gnome, so it isn't macOS specific

https://github.com/qgis/QGIS/assets/36125672/89b13f52-0d85-4e30-a667-a2447e01181b