The servers will go offline today at 12:00 UTC for maintenance. It should take between 10 and 20 minutes to complete.
This should fix the issues with fleets ‘teleporting’ and fleet icons not always being displayed. We plan to post more details about the next steps with the Play with Friends feature later today.
We’ll update this thread once it’s been completed.
Update: this has now been completed, the game servers should be back online.
Please note: since this update we’ve had reports of fleets still becoming invisible after moving them. Moving affected fleets and then restarting the game client appears to be necessary to restore normal behaviour.