Oh holly molly. That happened after I followed a sub-optimal translation. There are two options for export: "Marked for export" and "Only selected". In German, these are two words with almost the same meaning.
Sorry to hear about the trouble. I'll share your feedback with the team. I also found an article on export options that might help you, so please refer to this article: https://helpx.adobe.com/xd/user-guide.html/xd/help/export-design-assets.ug.html
Feel free to reach out if you need any further assistance.
Thank for your answer and the link. Just another idea, I think the most common usecase for export in my experienec is to export only selectede artboards. So would expect this option is teh first in list, but unfortunately it isn't. MAybe this is another thing you could carry to your team. Greetings from Hamburg, Simone
Sure, thanks for your feedback. We'll pass on your feedback to the team to look at.