I’m able to reproduce the issue on Safari, so I’ve gone ahead and filed a bug for our engineers to investigate and fix! I’ll keep you posted via this thread as soon as I have an update! Thanks again for taking the time to report the issue, we really appreciate it!
@Patrice_Ricard, our team has pushed a fix for this issue, so you should be able to use the CSV importer with Safari again! Marking this resolved, but don’t hesitate to comment below to let us know if the issue is resolved on your end! We look forward to your reply!