Hi Andrey,
I don’t think there are anything wrong with the condition which is set in your segment. There is an interval time between the two evaluations of the dynamic segment. Please check if the “Finland” is added after the last evaluation and before the next evaluation.
There is another situation:
Before the update of the field, the segment has been stopped. In this situation, the segment will be shown similarly as the member list in live status.
Please check the status reason of the segment. If it is stopped, go live it again.

If this helped you, I'd appreciate it if you'd mark this as a Verified Answer, which may in turn help others as well.
Best Regards,
Nya