Hi Alexander,
I moved to new version 26.5 and here my results:
Please see:
Comparison(left-Csv, right-GeoPackage)
Image.png (173.1 KB)
Image.png (164.8 KB)
Test data(input/output/QGIS)
5331-Csv-GeoPacakge.zip (3…...right-GeoPackage) image.png (173.1 KB) image.png (164.8 KB) Test...columns. If the columns are not recognized, the output layer will be...