Hi Alexander,
I moved to new version 26.5 and here my results:
Please see:
Input
image.png (69.6 KB)
Output
image.png (86.6 KB)
Test data(input/output/QGIS)
5427 Gml-TopoJson.7z (35.8 KB)
Thanks,...file some of features do not render by QGis. I don’t know why,...‘Iran’, ‘Oman’, ‘Kuwait’ do not render but they are inside file! By...