Exception: wrapped C/C++ object of type QgsProcessingToolboxTreeView has been deleted

[rduivenvoorde]

What is the bug or the crash?

Steps to reproduce the issue

I cannot easily reproduce this... but in a new profile (not using processing there during session), I disabled some plugins (one of them processing), and then stopped QGIS to restart it... and then the above message popped up...

Apparently the disabling of the plugin cleaned up some stuff...?

Versions

QGIS version	3.31.0-Master	QGIS code revision	678cee7
Qt version	5.15.8
Python version	3.11.2
GDAL/OGR version	3.6.2
PROJ version	9.1.1
EPSG Registry database version	v10.076 (2022-08-31)
GEOS version	3.11.1-CAPI-1.17.1
SQLite version	3.40.1
PostgreSQL client version	unknown
SpatiaLite version	5.0.1
QWT version	6.1.4
QScintilla2 version	2.13.3
OS version	Debian GNU/Linux 12 (bookworm)

Supported QGIS version

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

New profile

• I tried with a new QGIS profile

Additional context

No response

[nicogodet]

1. Load a vector layer and raster layer
2. Disable then re-enable processing plugin
3. Open processing toolbox
4. Click on one layer then the other in layer tree
5. See warning

[rduivenvoorde]

Yep, thanks! That is reproducible with me too.

[nicogodet]

Some iface signals are connected during processing plugin initGui but never disconnected (or I missed them)