Investigation is still going on at Asobo and we have identified possible causes for this issue. We do not have a fix for it yet, but we recommend all users who are seeing this issue, to join Sim Update 14 beta that will go live later this week.
All fixes for this issue will be pushed to beta. You are most likely still seeing the issue with the launch of the beta but it will receive many updates before the release of Sim Update 14 in December.
Details on how to join will be available on the forum when SU14 beta goes live.