Layers: Export → Save Selected Features As... saves an empty file

[kristianrl]

What is the bug or the crash?

Layers: Export → Save Selected Features As... results in a file without the selected features.

Steps to reproduce the issue

1. Load a polygon layer

2. Select a single feature using Select Features By Area or Single Click

3. Right click on the layer in the Layers list, click Export and Save Selected Features As.

4. Select the output format (we usually deselect the Geometry column). I have tested using GeoJSON, Shapefile and Geopackage.

5. After the export is succesful, the selected polygon is not present in the saved file

The exported GeoJSON file contains the following:

{
"type": "FeatureCollection",
"name": "mettre",
"features": [

]
}

Versions

The bug can be recreated using 3.28-3 and 3.30.3 - but the bug did not exist in 3.14. Version 3.14 still exports a usable file.

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

Cc: @GeodataInformatik @InformatikSilkeborg