It seems there are a lot of field groups in the export file. Could you please let me know which field group and which field that has the issue?
I’ve also tested the “Avaleht” field group, and couldn’t reproduce the issue.
Most of the time, issues like this are related to the WordPress installation or the server configuration. The first step we should take to debug this issue is to make sure that there’s no conflict between plugins and theme.
So, could you please try to reproduce the issue on one of the WordPress’ stock themes (like Twenty Sixteen) with other plugins deactivated? If it disappears, then you can activate the theme and plugins one by one to see which one causes the issue.
If you don’t want to do it on your live site, you can always create a staging/development site and test it there instead. That way the test won’t affect your live site.
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