Data Source Manager - ArcGIS REST Server - dialog/window closes when adding a layer

[frodewj]

What is the bug or the crash?

When adding a layer based on ArcGIS REST Server using Data Source Manager the Data Source Manager window automatically closes when a layer is added and the user needs to open it and reconnect to look for other layers.
This does not happend when for instance adding data from PostgreSQL.

Steps to reproduce the issue

1. Open Data Source Manager
2. Choose ArcGIS REST Server
3. Connect to a service
4. Select one layer
5. Push Add

Versions

QGIS version
3.20.2-Odense
QGIS code revision
9f59a15
Qt version
5.15.2
Python version
3.9.5
GDAL/OGR version
3.3.1
PROJ version
8.1.0
EPSG Registry database version
v10.027 (2021-06-17)
GEOS version
3.9.1-CAPI-1.14.2
SQLite version
3.35.2
PDAL version
2.3.0
PostgreSQL client version
13.0
SpatiaLite version
5.0.1
QWT version
6.1.3
QScintilla2 version
2.11.5
OS version
Windows 10 Version 2009

Active Python plugins
annotationManager
ComplexGmlInfo
Datafordeler
DigitizingTools
FeatureGridCreator
FlyFotosDK
gml_application_schema_toolbox
Kortforsyningen
nominatim
openlayers_plugin
ORStools
OSMDownloader
Qgis2threejs
qgisnetworklogger
qgis_resource_sharing
QuickOSM
quick_map_services
SentinelHub
wfsclient
db_manager
MetaSearch
processing

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