Affects Version/s: Minecraft 1.13.1
Fix Version/s: None
"/locate" command yields: "The nearest stronghold is at [8,~,8] (### blocks away)"
Eye of enders lead to same position.
Enter Spectator mode and see that there is no stronghold at [8,~,8].
http://chunkbase.com/apps/stronghold-finder#-9198315552835156374 shows no stronghold at that location [8,~,8].
Strongholds DO exist in at least one location, found by chunkbase.com. Found stronghold at [1540,~,-380] and verified with Spectator mode.
World was generated on a server during updates but before full 1.13 release and is now running on the full release 1.13.1.