Hello JaakkoSoini,
Thank you for your post,
The issue that you are experiencing is a bug that is known and has been entered into our database. the Jira ticket nnumber is UE-11368 for tracking. This bug is being investigated by our developers currently and I have added myself as a watcher on this issue. I will make sure to report back with any changes as soon as I see them.
Thank you for your patience while we work out this issue,