Hi Alexander,
I moved to new version 26.5 and here my results:
Please see:
Comparison(left-Csv, right-Shapefile)
image.png (187.7 KB)
Test data(input/output/QGIS)
5329-Csv-Shapefile.zip (46.5 KB)
Thanks,...Settings for reading CSV – adjust delimiter/encoding as needed...shp"; // CSV reader settings – adjust delimiter/encoding as needed...