Hekki @jank40911605,
Sorry to hear about this experience. Can you try to use Save As SVG and check if it works? Also try Ungrouping everything and then trying to Export.
The issue you are describing looks similar to the one reported on this UserVoice. If it is similar to the issue you are facing, I will request you to upvote it and add your comments there, which will help in prioritizing the issue getting fixed. By doing this, you will keep getting updates.
Looking forward to your response.
Thanks,
Anubhav