Switching between WMS info-output formats throws: CRITICAL QTableWidget: cannot insert an item that is already owned by another QTableWidget

[rduivenvoorde]

Loading a WMS layer, activating the i-tool and showing info of an object from the WMS layer shows
a big red error in the message bar,

and "CRITICAL Qt : QTableWidget: cannot insert an item that is already owned by another QTableWidget"
in the Log Messages.

To reproduce

https://geodata.nationaalgeoregister.nl/bevolkingskernen2008/ows?SERVICE=WMS&
I load layer nr 2 in EPSG:28992 and click i-tool

Now click one of the object, will default to for example html or feature output, which are both fine!
NOW switch to 'Text' output. you will see the 'critical'-message.

Every time you switch to html/feature and then back to Text it will be shown.

QGIS version	3.13.0-Master	QGIS code revision	3ef7d89
Compiled against Qt	5.12.5	Running against Qt	5.12.5
Compiled against GDAL/OGR	3.0.4	Running against GDAL/OGR	3.0.4
Compiled against GEOS	3.8.1-CAPI-1.13.3	Running against GEOS	3.8.1-CAPI-1.13.3
Compiled against SQLite	3.31.1	Running against SQLite	3.31.1
PostgreSQL Client Version	12.3 (Debian 12.3-1+b1)	SpatiaLite Version	4.3.0a
QWT Version	6.1.4	QScintilla2 Version	2.11.2
Compiled against PROJ	7.0.1	Running against PROJ	Rel. 7.0.1, May 1st, 2020
OS Version	Debian GNU/Linux bullseye/sid	This copy of QGIS writes debugging output.