Can not create "Rectangle from 3 Points" in Scratch Layer or GPKG

[thillyard]

Describe the bug
When attempting to "Create a rectangle from 3 Points" with either of the two methods given. The user is unable to commit changes to the layer. This seems to occur for GPKG, spatialite and Scratch layers, but works as expected with Shapefile Layers

How to Reproduce

1. Start with a blank map canvas add a scratch polygon layer
2. choose either of the "Add Rectangle by 3 Points options
   
3. create a polygon
4. attempt to commit the edits
5. See error -->
   

QGIS and OS versions

QGIS version
3.12.0-București
QGIS code revision
cd14149
Compiled against Qt
5.11.2
Running against Qt
5.11.2
Compiled against GDAL/OGR
3.0.4
Running against GDAL/OGR
3.0.4
Compiled against GEOS
3.8.0-CAPI-1.13.1
Running against GEOS
3.8.0-CAPI-1.13.1
Compiled against SQLite
3.29.0
Running against SQLite
3.29.0
PostgreSQL Client Version
11.5
SpatiaLite Version
4.3.0
QWT Version
6.1.3
QScintilla2 Version
2.10.8
Compiled against PROJ
6.3.1
Running against PROJ
Rel. 6.3.1, February 10th, 2020
OS Version
Windows 10 (10.0)
Active python plugins
crayfish;
DigitizingTools;
go2streetview;
icsm_ntv2_transformer;
kmltools;
LAStools;
latlontools;
mapswipetool_plugin;
mmqgis;
NNJoin;
openlayers_plugin;
processing_trajectory;
qconsolidate3;
qNote;
SDEllipse;
SRTM-Downloader;
StreetView;
timemanager;
valuetool;
db_manager;
MetaSearch;
processing

Additional context

[gioman]

@thillyard if you create your layer as multipolygon then saving the feature created with that tool is ok. I'm not sure if this can be considered a bug or if it is by design.

[lbartoletti]

Nope it's not by design. It's the only one with this bug (and don't no why, but works on mac 3.10 and not on freeBSD 3.10, maybe GDAL changes?)