Hi Alexander,
I moved to new version 26.5 and here my results:
Please see:
Comparison(left-Csv, right-MapInfoTab)
image.jpg (149.4 KB)
Test data(input/output/QGIS)
5321-Csv-MapInfoTab.zip (42.2 KB)
Thanks,...is why QGIS shows an empty layer and MyGeodata reports the file...tab"; // 3. Load options – adjust to the structure of your CSV...